Question

read the passage. then answer the question. daylight saving time daylight saving time is bad for our health. we lose an hour in the spring on the day we set the clocks ahead. changing our sleep patterns can disturb the body’s internal clock; even just one hour makes a difference. over time, this can lead to an increased risk of different health problems. one study showed that the risk of heart attacks slightly increases the monday after clocks are set ahead in the spring. many people worry that there are also more car accidents in the spring. all of this points to the fact that we should end daylight saving time. which claim does the author support with evidence? a we lose an hour in the spring when the clocks set back. b ending daylight saving time would improve heart health. c changing sleep patterns can disturb the body’s internal clock. d car accidents have been found to increase during the spring.

Explanation:

The passage states that changing sleep - patterns (due to Daylight Saving Time) can disturb the body's internal clock, and provides the evidence of a study showing an increased risk of heart attacks on the Monday after clocks are set ahead. Option C is directly supported by this evidence. Option A is a statement of fact but not a claim supported by evidence in the context of the passage's argument. Option B is not supported as the passage only mentions negative health effects of Daylight Saving Time, not that ending it would improve heart health. Option D is not discussed in the passage.

Answer:

C. Changing sleep patterns can disturb the body's internal clock.