From the statement I, A ≤ B < C ≥ D > E => C ≥ D
From statement II, F > D
Since, we cannot form a relation between C and F => Conclusion I is not true
From statement I, A ≤ B < C ≥ D > E => C > E
Since, we cannot say that C = E from the above relation => Conclusion II is not true

From the given statement I, A ≥ B < C ≥ D < E => E > D
From the given statement II, D > F
From above two statements => E > D > F => E > F => Conclusion I is true
From the given statement I, A ≥ B < C ≥ D < E => C ≥ D
From the given statement II, D > F
From above two statements => C > F => Conclusion II is true

From statement I, A < B ≤ C = D ≥ E ≥ F => D ≥ E
And from statement II, E ≥ G
Combining statement I and statement II => D ≥ E ≥ G => D ≥ G
We can break the above relation as D > G or D = G
Therefore, either Conclusion I is true or Conclusion II is true

From the given statement, A > B ≥ C < D > E ≤ F
We can infer that C < A => Conclusion I is true
From the given statement, A > B ≥ C < D > E ≤ F
We can infer that F ≥ E and D > E , so we cannot obtain a relation between F and D => Conclusion II is not true

From statement I, A < B ≤ C = D < E ≥ F => D ≥ B
From statement II, D > F > G => D > F
Since, we cannot form a relation between F and B from above statements => Conclusion I is not true
From statement I, A < B ≤ C = D < E ≥ F => E ≥ F
From statement II, D > F > G => F > G
From above two statements, E ≥ F > G => E > G => Conclusion II is true

Let us number the positions as shown in the diagram.
Sindhu is to the immediate left of the person sitting opposite Serena(given), Let us place Serena in position 1 and Sindhu in position 4.
Justin is second to the right of Serena and is sitting opposite Nadal(given), Justin is sitting in position 3 and Nadal is sitting in position 7.
Usha is second to the left of Nadal and third to the right of Deepa(given), Usha is in position 5 and Deepa is in position 2.
Sakshi is facing Sindhu(given), Sakshi is in position 8.
The only position left is 6 and will be occupied by Ussain.

The below is the final arrangement.

Let us number the positions as shown in the diagram.
Sindhu is to the immediate left of the person sitting opposite Serena(given), Let us place Serena in position 1 and Sindhu in position 4.
Justin is second to the right of Serena and is sitting opposite Nadal(given), Justin is sitting in position 3 and Nadal is sitting in position 7.
Usha is second to the left of Nadal and third to the right of Deepa(given), Usha is in position 5 and Deepa is in position 2.
Sakshi is facing Sindhu(given), Sakshi is in position 8.
The only position left is 6 and will be occupied by Ussain.

The below is the final arrangement.

Let us number the positions as shown in the diagram.
Sindhu is to the immediate left of the person sitting opposite Serena(given), Let us place Serena in position 1 and Sindhu in position 4.
Justin is second to the right of Serena and is sitting opposite Nadal(given), Justin is sitting in position 3 and Nadal is sitting in position 7.
Usha is second to the left of Nadal and third to the right of Deepa(given), Usha is in position 5 and Deepa is in position 2.
Sakshi is facing Sindhu(given), Sakshi is in position 8.
The only position left is 6 and will be occupied by Ussain.

The below is the final arrangement.

Let us number the positions as shown in the diagram.
Sindhu is to the immediate left of the person sitting opposite Serena(given), Let us place Serena in position 1 and Sindhu in position 4.
Justin is second to the right of Serena and is sitting opposite Nadal(given), Justin is sitting in position 3 and Nadal is sitting in position 7.
Usha is second to the left of Nadal and third to the right of Deepa(given), Usha is in position 5 and Deepa is in position 2.
Sakshi is facing Sindhu(given), Sakshi is in position 8.
The only position left is 6 and will be occupied by Ussain.

The below is the final arrangement.

Let us number the positions as shown in the diagram.
Sindhu is to the immediate left of the person sitting opposite Serena(given), Let us place Serena in position 1 and Sindhu in position 4.
Justin is second to the right of Serena and is sitting opposite Nadal(given), Justin is sitting in position 3 and Nadal is sitting in position 7.
Usha is second to the left of Nadal and third to the right of Deepa(given), Usha is in position 5 and Deepa is in position 2.
Sakshi is facing Sindhu(given), Sakshi is in position 8.
The only position left is 6 and will be occupied by Ussain.

The below is the final arrangement.