In poetry, meter is the patter of

rhyming words
figurative language
sound within the poems lines
stressed and unstressed syllable

Stressed and unstressed syllables

Explanation:

The meter of a poem is made up of feet.  A foot is a combination of stressed and unstressed syllables.  Different types of feet are iamb, trochee, dactyl, anapest, spondee, and pyrrhic. The most common one is iamb.  An iamb is a unstressed syllable followed by an unstressed syllable.  Iamb example: unquestioning.

i cannot see any of the options

answer: b) bubbling its way

explanation: an adjective is a word or a group of words that modifies a noun (name, thing, place,

in this case, the first option "to heartily enjoy" isn't describing or modifying any noun, the third option "hiking along merrily" is describing an action but it doesn't modify any noun, the last option "beside us" is just a preposition that indicates position, so the correct answer is the second one: "bubbling its way" because it is modifying the noun "stream".