Increases in the occurrence of hearing loss among teenagers are due in part to their listening to loud music through stereo headphones. So a group of concerned parents is recommending that headphone manufacturers include in their product lines stereo headphones that automatically turn off when a dangerous level of loudness is reached. almost all stereo headphones that teenagers use are bought by the teenagers themselves.
What this question is testing
Your task
Find the choice that makes the argument's conclusion more likely to be true.
Common trap
Answers that are consistent with the argument but add no real support, or that strengthen a claim the argument doesn't make.
Winning move
Locate the gap between evidence and conclusion, then pick the choice that closes it.
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