An animal’s bone cell looks different from the animal’s nerve cell. What does this tell us about their functions?

 the functions are different

Explanation:

Form follows function. If the forms of the cells are different, it is because their functions are different.

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.