It was a voluntary gesture.

compulsory
violent
deliberate
valuable

The correct answer is A. compulsory.

A voluntary gesture is one that is done freely and without coercion. It is an act of kindness or generosity that is not required or expected.

A compulsory gesture, on the other hand, is one that is done out of obligation or necessity. It is an act that is required or expected, and it is not done freely.

B. violent is not a correct answer because a voluntary gesture is not an act of violence.

C. deliberate is not a correct answer because a voluntary gesture is not necessarily an act that is done with careful thought or planning.

D. valuable is not a correct answer because a voluntary gesture is not necessarily an act that is done with the expectation of receiving something in return.