Final answer:
In this deceleration, nadir is after the peak of a contraction.
Step-by-step explanation:
In this deceleration, nadir is after the peak of a contraction: true.
The statement that nadir is after the peak of a contraction within the context of an economic discussion refers to the lowest point or trough in the business cycle, occurring after a period of economic decline. This is part of the larger cycle of economic phases which includes expansion, peak, contraction, and trough. Comparing this to the provided options a. and b., nadir would be analogous to the trough, which comes after the peak, not directly to deceleration metrics. Therefore, the use of nadir is not appropriate if the focus is on the rate of deceleration. During a recession, which is the contraction phase, the rate of economic activity is decreasing; it could be either less negative, if the downturn is slowing down, or more negative, if the downturn is accelerating. Thus, the statement can't be addressed as simply true or false without additional context.