Most likely the answer will be A. Mans struggle against man
I think the answer is "Without proper hygiene, dogs can become matted and sick, just the same as any human being." because the main statement is "<span>Dogs can be strong companions, but they also have needs that many people forget to address." because the fact at the beginning is only a statement to get you reading... Hope this helps!
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Generalization is used in literature to explain something complicated with a simple statement. ... When it is not the moment to refer to details, a generalization can give the readers an idea of the situation at hand.