Indicate which compounds below can have diastereomers and which cannot g

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.

the answer is