My work with leaders from all walks of life has （） me that they were not born leaders—they are made.

A. rules used for ordering and connecting words in a sentence
B. principles defining the connections among different variables
C. definitions describing the impact of biorhythm on one’s behavior
D. criteria measuring a person’s performance levels with biorhythm

A. It evolves from common sense.
B. It is second to intelligence.
C. It is to be pursued.
D. It underlies power.