As soon as Justin started his summer job as a heavy machinery operator,he began to feel dizzy and nauseous at work.It is most likely that Justin's symptoms are related to the machinery's production of
A) harmonics.
B) noise.
C) ultrasound.
D) infrasound.

Question

Quizplus · Accepted Answer

Infrasound, which is sound at frequencies below the human hearing range, can cause symptoms like dizziness and nausea when produced by heavy machinery.

As Soon as Justin Started His Summer Job as a Heavy