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Final answer:Theopportunity costof Ciana's shopping trip is $87, which is computed bymultiplyingher total time spent shopping (1.5 hours) by her hourly wage ($58/hour). In deciding where to shop, she needs to consider both the cost of the sneakers and her opportunity cost, choosing the location that minimizes the combined total.Explanation:To compute theopportunity costof Ciana's time, you multiply the number of hours she spends shopping by her hourly wage rate. Her total time spent shopping would be the travel time each way plus the 30 minutes spent at the store. If she spent 1 hour traveling (round trip), plus 0.5 hours shopping, that's a total of 1.5 hours. At a wage rate of $58 per hour, her opportunity cost of shopping would be $87 (1.5 hours x $58/hour).In determining where to shop, Ciana must consider both this opportunity cost and the cost of the sneakers. A store with lower priced sneakers may seem preferable, but if it takes longer to get there, theadditional costsin terms of lost income from work may offset the savings.Therefore, Ciana would have to do this calculation for each potential shopping location and choose the one which minimizes the combined cost of the sneakers and the opportunity cost of her time spentshopping.Learn more about Opportunity Cost here:brainly.com/question/12121515#SPJ1...