Question

a pregnant woman was recently arrested for using heroin. she is physically dependent on heroin and there is a risk that her fetus will be born dependent on heroin as well. if it causes birth defects, heroin would be considered a ______ for the fetus. zygote genetic factor teratogen hereditary factor

Explanation:

A teratogen is an agent that can cause birth defects. Heroin, when used by a pregnant woman and potentially causing birth - defects in the fetus, fits the definition of a teratogen. A zygote is the initial cell formed when two gametes fuse. Genetic and hereditary factors relate to genes passed from parents to offspring, not to external substances like heroin.

Answer:

C. teratogen