PSAT Math Multiple-Choice Question 569: Answer and Explanation

Question: 569

A worldwide treaty prohibiting commercial whaling (i.e., the hunting of whales) was passed at some point between 1930 and 2010. Based on the data, what is the year when this treaty most likely went into effect

• A. 1930
• B. 1950
• C. 1970
• D. 2000

Correct Answer: C

Explanation:

(C) After the passage of a treaty banning whaling, it is most reasonable to expect that the population of blue whales would gradually increase. 1970 is the only choice after which there is an increase in the global blue whale population.