Question

wyatt is writing an essay on x - rays. read each detail and then select the section where it fits best.
details
sections
discovery
uses
dangers
x - rays can kill living cells, so they must be used with extreme care.

x - rays allow doctors to check for broken bones inside the human body.

a chest x - ray can help determine whether a person has pneumonia, a serious disease of the lungs.

on november 8, 1895, german scientist wilhelm conrad röntgen first observed x - rays.

Explanation:

First Detail: "X - rays can kill living cells, so they must be used with extreme care."

This detail is about the harmful aspects of X - rays, which is related to the potential dangers of using X - rays. So it fits in the "Dangers" section.

This is about how X - rays are used by doctors to diagnose broken bones, which is a practical use of X - rays. So it fits in the "Uses" section.

This describes how X - rays are used in medical diagnosis (to detect pneumonia), so it is a use of X - rays. Thus, it fits in the "Uses" section.

Answer:

Dangers (select the circle under the "Dangers" column for this detail)

Second Detail: "X - rays allow doctors to check for broken bones inside the human body."