Passage:
Title: "Echoes of Nature"
In the heart of the forest, where ancient trees stood sentinel, nature's symphony played out in a harmonious crescendo. The rustling leaves provided a gentle percussion, while the melodious bird calls wove through the air like ethereal strings. The brook, gurgling merrily over smooth stones, added its cheerful notes to the woodland orchestra. Occasionally, a distant rumble of thunder resonated, punctuating the peaceful serenade.
Which phrase contains onomatopoeic words?
"...rustling leaves provided a gentle percussion..."
"...bird calls wove through the air like ethereal strings."
"...the brook, gurgling merrily over smooth stones..."
"...occasionally, a distant rumble of thunder resonated..."