Answer:
B. Rising economic prosperity
Step-by-step explanation:
Stagflation in the 1970s, by definition, brought unemployment and economic inflation which led to rising prices for products and services. Therefore, the answer is B. Rising economic prosperity.
As an alternative, we can look for an outlier:
A, C, and D highlight negative aspects (unemployment, rising prices, inflation). B, however, is a positive aspect, economic prosperity, thus should intuitively be chosen as an answer.