Question

Which of the following contaminants is radioactive?
a. benzene b. plutonium c. mercury d. lead

Answer 1

The correct answer is option b. "plutonium".

Step-by-step explanation:

Plutonium is a chemical element with the symbol Pu and the atomic number 94. Plutonium is known for being a very dangerous radioactive contaminant for most of its isotopes. For instance, Plutonium-239, the isotope found in some fuels, is much more radioactive than Uranium-238.

Answer 2

Try going with B. plutonium