Thalidomide was once used to treat intense nausea and morning sickness in pregnant women. unfortunately, if administered at certain points during gestation it resulted in limb malformation. this drug is an example of a(n)

I believe that the drug described above is an example of a tetratogen. Tetratogens are agents and conditions such as viruses, drugs, chemicals, stressors, and malnutrition, which can impair prenatal development and lead to birth defects or even death. Others are behavioral tetratogens that tend to harm the prenatal brain, affecting the future child's intellectual and emotional. 

The correct answer is d