You are presented with the quiz "A mutation in parent's sex cells can cause new traits to appear in a what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring" and "child' is ambiguous between 'offspring' and 'immature offspring'". 

So, what's the best answer to the question?


 

        child   