Question

which is considered a chemical mutagen?
tanning beds
tobacco
x - rays
sunlight

Explanation:

To determine the chemical mutagen, we analyze each option: Tanning beds and sunlight involve UV radiation (physical mutagen), X - rays are ionizing radiation (physical mutagen). Tobacco contains chemicals (like polycyclic aromatic hydrocarbons) that can cause mutations, so it's a chemical mutagen.

Answer:

B. tobacco