A coupling failure is often dangerous because of ______.

a. fire
b. vibration
c. a blown fuse
d. flying shrapnel


a. Incorrect. A coupling failure is often dangerous because of flying shrapnel.
b. Incorrect. A coupling failure is often dangerous because of flying shrapnel.
c. Incorrect. A coupling failure is often dangerous because of flying shrapnel.
d. Correct. A coupling failure is often dangerous because of flying shrapnel.

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