Which is an example of an inherited trait? a knowing how to add b building muscle tone c becoming a piano player d having a round face

Hello!

The correct answer is D. Having a round face. 

An inherited trait is simply something that you inherit, or receive, from your parents when you are born. 
Knowing how to add, building muscle tone, and becoming a piano player can all be learned. These are not abilities that are inherited at birth. 

I hope this helps you! Have a fantastic day!

The answer would be D being those are all learned or earned attributes.

Bc they get tired from playing with other kittens

Distillation.  distillation is the correct answer.