The statement states that the idea of private property is selfish and that it is one of the reasons leading to an imbalance among the rich and common man. However, the argument can be weakened by citing survival, which includes food, clothing and shelter. Hence, option 2 is the most appropriate option.

The branches of biology and medicine concerned with the structure and function of plant and animal cells. Similarly, Ornithology the scientific study of birds.

Hence, “Ornithology” is correct option.

In RIGT : WDBY

R + 5 = W

I – 5 = D

G – 5 = B

T + 5 = Y

Similarly,

F + 5 = K

U – 5 = P

S – 5 = N

Y + 5 = D

Therefore “KPND” is correct option.

Thermometer, Barometer, Hygrometer are measuring device whereas Diameter is mathematical term.

In BDYW, DFYW, EGXV groups, the first and second letters are alternate. The third and fourth letters are alternate and written in a reverse alphabetical order.

But in “CEXZ” above mention pattern is not followed.

 (1) Q5W ⇒There are 5 letter R, S, T, U, V between W and Q.

(2) B8L ⇒ There are 9 letter C, D, E, F, G, H, I, J, K between B and L.

(3) T4Y ⇒ There are 4 letter U, V, W, X between T and Y.

(4) F3J ⇒There are 3 letter G, H, I between F and J.

Here number is represent number of letter between 2 given letter in English alphabet. Hence 2 is the correct option.

4 and 8 are 2 ² and 2 ³ respectively. So, 1 ² and 1 ³ are the next numbers in the group.

A tractor is used to plough a field. But a tractor is called a car.

Thus car is used to plough a field.

Direction diagram can be traced as shown below,

Now he need to travel 20 km – 18 km = 2km to reach his home.

1) Daughter walked before the father.

Daughter > Father

2) Son was walking behind the mother and ahead of father.

Mother > son > Father; Daughter > Father

Hence, now we can conclude that Father walked last.