Why is surgery most often considered a last resort as a treatment option?

Surgery involves cutting into or otherwise entering the body, so it is invasive and can carry risks such as complications and a recovery period. Because less invasive treatments may be tried first, surgery is often considered a last resort. Choice A, “It is an invasive form of treatment,” gives the best reason; the other choices describe effects more commonly associated with certain drugs or treatments, not surgery in general.

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