Answer:
First choice, mutation!
Explanation:
Sickle cell anemia is caused by a mutation in the gene that tells your body to make the iron-rich compound that makes blood red and enables red blood cells to carry oxygen from your lungs throughout your body (hemoglobin).
I believe c is the correct answer.
Consuming alcohol* while pregnant* results in Fetal Alcohol Syndrome as well as other birth defects.
