Frederick douglass's use of the following phrase is an example of what figurative language?
"a still tongue makes a wise head."

a. idiom
b. hyperbole
c. metaphor
d. personification

"A still tongue makes a wise head"   is an idiom. Option A is correct.

This saying may mean that someone who does not talk much, but listens to other people, probably has experience, knowledge and good judgement.

An idiom is a type figure of speech which should not be taken literally. It is established by usage that has a meaning not necessarily deductible from those of the individual words.

Idioms convey a particular sentiment, but they do not literally mean what the individual words themselves mean.

a

explanation:

she was trying to use   reliable narrator.