The answer to the question is A.
No; <span>otitis externa.
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<span>Swimming</span> is your key word here.
Otitis externa(swimmer's ear) is caused by remaining water in the ear after swimming.
Quote, "<span>This creates a moist environment that helps bacteria or fungi grow."
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And of course, caused by an infection: his sore throat/cold.
I would say he doesn't need ear tubes; however, I am not sure about ear tubes.
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To observe the substance and figure it out
