A poem with meter includes: 1. a repeating pattern of accents within each line
2. a pattern of rhyming words at the ends of lines
3. at least thirty lines, organized into groups of four
4. an imaginative comparison between two unlike things

ok

Explanation:

A) A repeating pattern of accents within each line

Meter is used to help a poem maintain a steady and predictable flow. It was created by consistent patterns of individual parts of words: syllables and their accents. With meter,  its natural rhythms are usually from one accent to the next, not just one syllable to the next.

Hope this helps :)

Definitely the last option.