Final answer:
To find out how much cholesterol is in a 5-ounce serving of lobster, we use a proportional comparison based on a 3.7 ounce serving containing 71 milligrams to calculate that 5 ounces contain approximately 95.9 milligrams.
Step-by-step explanation:
The student is asking for a proportional change calculation in the amount of cholesterol in lobster. Starting with a 3.7-ounce serving of lobster containing 71 milligrams of cholesterol, we use the concept of cross-multiplication to find the amount of cholesterol in a larger serving. To solve for the amount of cholesterol in 5 ounces, we set up our equation like this: 71 mg/3.7 oz = x mg/5 oz. Cross-multiplying, we get 3.7x = 355, where x is the cholesterol content for 5 ounces. Dividing both sides by 3.7, we find x = 95.9 mg. The closest matching answer from the given options is option b: 80.4 mg, but we should note that none of the given answers correctly matches our calculation, so there may have been a mistake in the question or given options.