Both i (investment) and c (consumption) significantly (and in that order) at the start of the great depression..

The correct answer is (b)

Explanation:

The great depression of 1929 started because of the stock market crash which led to the worst economic turn down in history. The industrialised world was greatly affected by the economic depression which led to a decline in both investment and consumption. Overall, both employment and GDP declined in the great depression which forced investment and consumption to fall significantly.

in terms of experimental research, mcdonald’s charging different prices in the two cities relates to

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