The idea that the business cycle is recurrent means that
a. peaks and troughs of the business cycle occur at regular intervals.
b. many economic variables to move together in a predictable way over the business cycle.
c. declines in economic activity tend to be followed by further declines, and growth in economic activity tends to be followed by more growth.
d. the standard pattern of contraction-trough-expansion-peak occurs again and again in industrial economies.

D) The standard pattern of contraction-trough-expansion-peak occurs again and again in industrial economies.

Explanation:

A recession is a time of declining monetary execution over a whole economy, as often as possible, estimated as two consecutive quarters. Organizations, financial specialists, and government authorities track different monetary markers that can help anticipate or affirm the beginning of downturns. However, they're formally announced by the NBER.

The NBER has the obligation of deciding when a downturn starts and when it closes. All the more explicitly, it is the Business Dating Committee inside the NBER that chooses the pattern of the contraction.

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