The opportunity cost of choosing option C instead of option B is 4 scarves.
Opportunity cost is an economic term to refer to the value of the best unrealized option.
According to the previous definition, the opportunity cost of choosing option C over option B is 4 scarves because we had the opportunity to obtain 8 scarves with option B, but we chose option C with 4 scarves because it offered us the best option balanced between scarves and blankets.
So, the correct answer is C because it mentions the correct information, choosing option C represents 4 scarves less than option B.
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