Which form of radiation is used to kill microorganisms?

X- rays, gamma rays.

Explanation:

Ionizing radiations are used to kill microorganisms. These radiations include x-rays, gamma rays and high energy electron beam. These radiations are passed into the cell. As a result, the cell component and the molecular structure gets damaged. These rays are used to kill microorganisms because they penetrate more than other rays.

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

it is b. absorbs thermal energy