The term ‘crucifix’ is another word for the cross and is used to symbolize Jesus Christ. ‘Crucial’ is an adjective meaning essential or necessary. In the given context, the urgency of the sentence suggests that the term ‘crucial’ is more appropriate.
So the sentence is trying to convey something it is important to replace the crucifix. So option C is the correct answer.

‘animously’ is a made-up word and is not a part of the English vocabulary. The word ‘unanimously’ indicates a state of uniformity. In the above context, ‘unanimously’ is the adverb that can most appropriately qualify the verb ‘voted’ to indicate a situation of complete accord.

1) H sits third to the right of D. Three persons sit between H and B who sits to the left of D. So here we have two possible cases i.e. case 1 and case 2.

2) E sits third to the left of B and is an immediate neighbor of H. H is the only neighbor of G who faces the same direction as D.

3) A sits second to the right of B and faces north.

4) C sits third to the left of F.

5) A and F face the same direction which means F faces north.

6) E faces the same direction as G. Persons sitting at the extreme ends face the same direction.

So, case 1 gets eliminated here.

7) C and H face the opposite direction as that of E.

So, the final arrangement is.

1) H sits third to the right of D. Three persons sit between H and B who sits to the left of D. So here we have two possible cases i.e. case 1 and case 2.

2) E sits third to the left of B and is an immediate neighbor of H. H is the only neighbor of G who faces the same direction as D.

3) A sits second to the right of B and faces north.

4) C sits third to the left of F.

5) A and F face the same direction which means F faces north.

6) E faces the same direction as G. Persons sitting at the extreme ends face the same direction.

So, case 1 gets eliminated here.

7) C and H face the opposite direction as that of E.

So, the final arrangement is.