Question

I can't understand people who are cruel ....... animals.

a. to. b. at
c. with. d.for

Answer 1

b. at

is the correct answer

Answer 2

I can't understand people who are cruel with animals is the correct sentence formation, so option c) with is the right answer.

The reason is it is the right type of preposition to add there.

In case if you add the other prepositions given in the options, the sentence will become error or incomplete.

Hope this answer helps.

Mark my answer as brainiest.