Which organizations, as per the Internal Revenue Service (IRS) Code, hire people to perform a specific career role?

Organizations that fall under Section of the Internal Revenue Service (IRS) Code do not exist for profit, and work for social causes and reforms. Such organizations usually hire the services of .

Answer Choices for blank 1:
A. 501 (c) (3)
B. 501 (c) (4)
C. 501 (c) (5)

Answer Choices for blank 2:
A. lobbyists
B. speechwriters
C. diplomats