Final answer:
The correct answer is a) Hedgerow. In the song "Stairway to Heaven," the lyric mentions a fence formed by a dense line of trees or shrubs.
Step-by-step explanation:
The correct answer is a) Hedgerow. In the song "Stairway to Heaven," the lyric mentions a fence formed by a dense line of trees or shrubs. This is known as a hedgerow. A hedgerow is a barrier made up of closely planted shrubs or trees, usually found in rural areas.