At parties John doesn't mind making a（ ）of himself as long as it

At parties John doesn't mind making a（ ）of himself as long as it brings about joy and laughter.

hero

fool

coward

man

本题考查常见名词及固定搭配的使用。

make a fool of为固定搭配，意为“出...的洋相”，符合句意。

句意：在派对上，约翰不介意出洋相，只要能带来喜悦和快乐。