Which describes all of the scientists in this unit?

A.

curious

B.

talkative

C.

pessimistic

D.

wealthy

What do you mean by 'in this unit'? If we're talking about scientists in general it would be A. curious. Not all scientists are talkative, pessimistic, or wealthy. So, that leaves curious. Because, why would you decide to be a scientist if you're not curious about the world and science?

All scientists are different so they all have different personality some can be all some can only be one you never can choose what a scientist is