Monozygotic twins are also known as ______ twins

Kristina is an automobile mechanic. Whenever clients ask her to fix their car, she always completes the job on time, perfectly, and at a fair price. We might say that Kristina is what type of mechanic?

A) A valid one B) A reliable one C) A valid and reliable one D) Neither valid nor reliable

"Preformationism" refers to the idea that

A) parents had to plan carefully before having children. B) the embryo was a preformed miniature adult. C) the mind of a child is like a blank slate. D) children behave in ways for which they are rewarded.