What did Thomas Hobbes believe people needed in order to have freedom?

Hobbes asserted that the people agreed among themselves to “lay down” their natural rights of equality and freedom and give absolute power to a sovereign. Hobbes called this agreement the “social contract.” Hobbes believed that a government headed by a king was the best form that the sovereign could take.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."