Final answer:
The percentage of false positives in nonreactive NSTs is 2%, so the correct answer is a) 5%.
Step-by-step explanation:
The question is asking about the percentage of false positives in nonreactive NSTs (non-stress tests). In this case, the solution 3.18 states that the test is negative 2 percent of the time, so we can infer that the test is positive 98 percent of the time. Therefore, the percentage of false positives would be 100% - 98% = 2%. So, the correct answer is a) 5%.