oishik2910 wrote:
mike
sir
the reason we have picked choice D because it shows that why so many people with asthma wound up in competitive swimming. It's not that being in the pool causes the asthma (the naive, rash conclusion); instead, the people who already had asthma were sent to the pool
but my doubt is
children are sent to swimming pool as a part of medical procedure but they may or may not become competitive swimmer : for instance
50 children were sent to swimming for 3 months to bring their asthma
...
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