PSAT Math Multiple-Choice Practice Question 569

Question: 569

A marine biologist has conducted research into the population of blue whales over the past few decades. The estimated global blue whale population is plotted against the given year in the graph below:

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

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