Final answer:
The correct answer is option C. Chemical exposure during pregnancy can impact multiple generations of offspring through epigenetic inheritance.
Step-by-step explanation:
Exposure to chemicals during pregnancy can have long-lasting effects on the offspring. Research has shown that if a pregnant person is exposed to chemicals that lead to disease, it can impact multiple generations of offspring. This is known as epigenetic inheritance.
A study with pregnant rats exposed to toxins found that their male offspring, who were not directly exposed to the toxins, still developed the same illnesses as the exposed mothers. This suggests that epigenetic patterns of gene expression caused by the toxins were retained in the germ line cells and passed on to subsequent generations.
Therefore, the correct answer is C) Multiple generations. The effects of chemical exposure during pregnancy can extend beyond the first generation and impact multiple generations of offspring.