Answer:
a. by an infected mother breastfeeding her child
b. through sharing needles with strangers during intravenous drug use
c. through unprotected sexual contact with an infected person
d. through a blood transfusion supervised by a doctor
answer: d. through a blood transfusion supervised by a doctor
Step-by-step explanation:
Theres no explanation. Its obvious. Its also the right answer. Don't thank me.