A. Polar regions. Explorers didn't start getting close to the ice caps until a decade or two before world war 2 started.
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I think it's B, I'm little bit confused cause English isn't my first language, sorry.
good luck :)
Answer:
In part, this balanced approach was likely motivated by the significant slowdown in U.S. productivity growth, uptick in inflation, and, by the mid-1970s, doubling of the unemployment rate that coincided with the expansion of federal oversight into areas such as environmental quality. 2 To better understand the potential effects of environmental regulation on the economy several government reports were commissioned to investigate the potential impacts on a wide array of measures, including national economic growth, industries and firms, employment, and consumers (e.g., U.S. CEQ, 1971).
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brainly me
Answer: is there any answer choices
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