He did it _____gratitude for everything she had done for him.

He did it _____gratitude for everything she had done for him.
A、with
B、in
C、with regard to
D、out of
【正确答案】：D
【题目解析】：考查介词词义辨析。句意：他那样做是出于感激她为他所做的一切。out of gratitude出于感激；with regard to关于。