Question

journal of health
white noise and a good nights sleep
by ali karter
many people look to sleep aids to help them fall asleep. one such aid is listening to white noise, which is a consistent hush sound produced by a white noise machine. white noise absorbs or conceals disruptive sounds that may affect someones sleep.
although many people rely on white noise to sleep, some scientists question whether it is good for the brain to listen to sound throughout the night. they say there is a possibility that the brain cannot rest as it should because it is constantly hearing and analyzing the sounds. there are others, however, who argue that white noise is actually soothing to the brain and that if it gets people to sleep, then that is better than no sleep at all.
overall, research shows the effect of white noise on the quality of sleep likely depends on many factors, including the individual. but at this point, research is ongoing and results are inconclusive. what we do know is that plenty of people cannot get to sleep without it.
what is the best summary of the article?
people who rely on white noise to help them sleep are going against scientific advice.
research shows that listening to white noise is the only way some people are able to sleep.
researchers are not sure how best to study the effects of white noise on peoples sleep.
many people use white noise as a sleep aid even though scientific evidence is inconclusive.

Explanation:

The article states many people rely on white noise to sleep, notes scientific debate (some question its effects, others argue it helps), and concludes research is inconclusive. This aligns with the summary that people use it despite inconclusive evidence.

Answer:

D. Many people use white noise as a sleep aid even though scientific evidence is inconclusive.