Laura's total utility from consuming eight,nine,and ten candies is 35,42,and 45,respectively.Her marginal utility from the ninth candy is

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Marginal utility is the additional utility gained from consuming one more unit of a good. In this case, Laura's marginal utility from the ninth candy would be the difference between her total utility from consuming nine candies (42) and her total utility from consuming eight candies (35), which is 7. The best choice for Laura would be to stop consuming candy after the ninth candy, as her marginal utility decreases after that point, indicating that the additional utility gained from consuming another candy is decreasing.

Laura's Total Utility from Consuming Eight,nine,and Ten Candies Is 35,42,and