A reproductive health hazard, listed on a Material Safety Data Sheet (MSDS) that can cause genetic changes in sperm or egg cells is called a __________.

Correct Answer: Option A — mutagen

Mutagens are chemical or physical agents capable of inducing genetic mutations by altering the DNA sequence within cells. When these agents affect germ cells—sperm or eggs—they can cause heritable genetic changes. This classification is critical for risk assessment and medical surveillance programs under maritime occupational health regulations.