He is known for his compliant nature.

Answer: Option D

Livid : furiously angry.
Complaining : the expression of dissatisfaction or annoyance about something.
Adamant : refusing to be persuaded or to change one's mind.
Yielding : (of a person) complying with the requests or desires of others.
Compliant : disposed to agree with others or obey rules, especially to an excessive degree; acquiescent.

Synonym of Compliant is Yielding