C. It begins with 3/8 and 1/3, and we need to make it 5/8 and 2/3, and the one that does that is C.
I don't see the picture so i can't answer your question
B...............I think ...........................
Extrinsic motivation is the desire to behave in certain ways to receive external rewards or avoid threatened punishments. Some circumstances that might help you to distinguish this is if you feel overwhelmed about finishing an assignment before its due date or if you are excited for the rewards that come from you doing well.
A mixed mexican can be Chicano. But term Chicano is normally used to refer to someone born in the United States to Mexican parents or grandparents and is considered a synonym of Mexican-American. A person who was born in Mexico and came to the United States as an adult would refer to him/herself as Mexican, not Chicano.