Multiple choice

Most people with brain tumors undergo surgery. There are many complications that can be associated with any surgery, such as infection. Instead of surgery, doctors should recommend a combination of a modified diet and a non-invasive procedure called radiography, in which the stones are shattered with radio waves.

Which one of the following is an assumption on which the argument relies?

  1. Brain tumor surgery is becoming more risky.

  2. Brain tumor surgery has progressed significantly, so the risk of complications has been lowered.

  3. Diet alone is not enough to prevent brain tumor, radiography is necessary as well.

  4. The likelihood of complications resulting from radiography is significantly lower than those associated with any surgery.

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This fills the gap between the premises and conclusion. Otherwise, the author would have no reason to recommend radiography over surgery.

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