Concept:Prolonged or lingering sound caused by multiple reflections is called reverberation.Explanation:During a thunderstorm, sound waves reflect off buildings, hills, and other surfaces.These reflections arrive at the listener at slightly different times.The brain perceives this as a single, stretched, or prolonged sound rather than a distinct echo.This persistence or lengthening of sound after the original source has stopped is known as reverberation.Answer:D. reverberation