Answer: Option (d) is correct.
Explanation:
Given that,
Wendy's weekly food budget = $48
Each salad costs = $6
Each smoothie costs = $3
She knows that 4 salads and 8 smoothies gives her a utility of 8
So, Wendy's utility-maximization point is:
4 salads, 8 smoothies
4 × $6 + 8 × $3 = $48
This is a utility maximization point.