Question

1. which of the following noises is loud enough to cause hearing damage? a. whispered conversation b. normal conversation c. heavy traffic d. rock concert

Explanation:

Sounds above 85 decibels for extended periods can cause hearing damage. A rock concert typically has sound levels well above 85 decibels, often reaching 110 - 120 decibels or more. Whispered conversations are around 30 decibels, normal conversations around 60 decibels, and heavy traffic around 85 decibels but usually not as damaging as a rock concert due to shorter exposure times in typical scenarios.

Answer:

d. Rock concert