What stanza in “Hanging Fire” best expresses the central idea of the poem?

Read the poem, find the stanza (Line) that best conveys the central idea/theme of the poem, this is usually the line that is the most important to the poem in a whole

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".