Answer:
former U.S. senator, secretary of state, and U.S. ambassador
Step-by-step explanation:
a). son of a former president, member of the House of Representatives, from a large southern state
b). commander in chief of the state militia, mayor, and governor
c). community leader, state senator, and U.S. senator
d). former U.S. senator, secretary of state, and U.S. ambassador