Which statement correctly describes a couplet?

A couplet consists of three quatrains.

O A couplet consists of two rhyming lines.

A couplet consists of four rhyming lines.

O A couplet is used as the opening lines of a sonnet.

O A couplet consists of two rhyming lines.

Explanation:

because a couplet is a literary device that can be defined as having two successive rhyming lines in a verse, and has the same meter to form a complete thought. It is marked by a usual rhythm, rhyme scheme, and incorporation of specific utterances.