For each variable, determine whether it is best thought of as discrete or continuous. Variable Discrete Continuous (a) The fuel efficlency, In miles per gallon, of an American-made car (b) The total snowfall amount in Minneapolis this year (c) The length of the arm of a heavyweight boxer (d) The highest grade level (1st, 2nd, or 3rd) completed by a high-school dropout

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A: closest option to the answer is C

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A: