PrepTest 92+, Section 1, Question 11
Science writer: Studies indicate that North Americans are becoming more lethargic. One researcher has concluded from these data that fast-food consumption has an adverse effect on people's health. In the early 1970s the average North American family consumed one fast-food meal a week, while in the 1990s an average family consumed one fast-food meal a day. However, few lethargic adults exercise regularly, and lack of exercise can contribute to lethargy. Thus, the lethargy studies do not settle the question of whether fast food is unhealthy.
Science writer: Studies indicate that North Americans are becoming more lethargic. One researcher has concluded from these data that fast-food consumption has an adverse effect on people's health. In the early 1970s the average North American family consumed one fast-food meal a week, while in the 1990s an average family consumed one fast-food meal a day. However, few lethargic adults exercise regularly, and lack of exercise can contribute to lethargy. Thus, the lethargy studies do not settle the question of whether fast food is unhealthy.
Science writer: Studies indicate that North Americans are becoming more lethargic. One researcher has concluded from these data that fast-food consumption has an adverse effect on people's health. In the early 1970s the average North American family consumed one fast-food meal a week, while in the 1990s an average family consumed one fast-food meal a day. However, few lethargic adults exercise regularly, and lack of exercise can contribute to lethargy. Thus, the lethargy studies do not settle the question of whether fast food is unhealthy.
Science writer: Studies indicate that North Americans are becoming more lethargic. One researcher has concluded from these data that fast-food consumption has an adverse effect on people's health. In the early 1970s the average North American family consumed one fast-food meal a week, while in the 1990s an average family consumed one fast-food meal a day. However, few lethargic adults exercise regularly, and lack of exercise can contribute to lethargy. Thus, the lethargy studies do not settle the question of whether fast food is unhealthy.
Which one of the following most accurately expresses the conclusion of the science writer's argument?
A lack of regular exercise is one cause of lethargy in North Americans.
High consumption of fast food is a health risk only when combined with a lack of regular exercise.
The researcher's data show that the consumption of fast food is not the main cause of poor health in North Americans.
The lethargy studies failed to consider one probable cause of lethargy.
The researcher's conclusion was not adequately justified by the lethargy studies.
Explanations
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