Answer:
Ernest R. “Jack” Hilgard, the Stanford psychology professor who helped make hypnosis respectable as a medical tool and four decades ago led development of the Stanford Hypnotic Susceptibility Scale to standardize research practices, has died. He was 97.
Explanation:
I believe the answer is C. oil pan
Oil pan usually bolted on the bottom<span> of the crankcase (even though in most cases it's made to be detachable) to cover the bottom of engine block.
It is also molded on the bottom of the crankcase so it could be used as oil reservoir.</span>
They are used as radio waves, infrared radiation, visible light.
