Ryan's Actions Exemplified the Process of Selection When He

Ryan's actions exemplified the process of selection when he

A) decided to major in biology in order to prepare for an eventual career in medicine.
B) chose to go to medical school in Mexico when he did not get accepted at any American school.
C) taught himself to speak fluent Spanish before going off to medical school in Mexico.
D) borrowed money from his uncle to pay for medical school when his own father said "No."