The Japanese proverb "the nail that sticks up gets hammered down" means that

A) people should not stand out or be different from everyone else.
B) the Japanese do not like sloppy workmanship.
C) those people who stand up for what they believe in will get what they need in life.
D) you might get hit if you disagree with someone in Japan.

Japanese Proverb

Traditional sayings originating in Japan, often encapsulating moral lessons, wisdom, and cultural values conveyed through metaphorical or allegorical language.

Sticks Up

The act of defending or standing up for someone or something, often in the face of criticism or opposition.

Hammered Down

A colloquial expression meaning to solidify, confirm, or enforce something with emphasis or authority.