Answer :
The part of the business cycle given that shows a period of contraction is Point B.
Why does point B show contraction?
When the economy is in a period of contraction, the business cycle would show a fall from the peak to the trough.
The peak is point A and the trough is Point C. Point B shows the fall from A to C which means that Point B must be the contraction.
In conclusion, option B is correct.
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