Why are the muscles that move the fingers and wrist located in the forearm?

Hi! i’m not sure if i’m right can someone : ) deborah is attempting to understand her personality type and preferences in order to decide on her future profession. which personality assessment is most likely to give her the information she desires? a. big five test b. myers-briggs type indicator (mbt) [i think it’s this one not sure] c. thematic apperception test (tat) d. minnesota multiphasic personality imventory (mmpi-2)