Which of the following defines the meter of a poem

Meter or foot is a combination of a stressed and unstressed syllabic pattern in a verse (stressed syllables tend to be longer, and unstressed shorter). It gives poetry a rhythmical and melodious sound, so the arrangement of stressed and unstressed syllables defines the meter of a poem.

The sentence needs a descriptor of exactly "what" will happen at gurley and marina. in this case, it is the light at the intersection turning green. in this case, the sentence could be rewritten as "the light at the intersection of gurley and montezuma will turn green exactly three seconds after the light at the intersection of gurley and marina."