For part a, viruses do not produce antitoxins. Viruses are not affected by antibiotics, but are affected by anti-viral drugs. So the answer should be lives inside cells.
Vaccines always contain a weak, inactive form of the virus. You don't want to give an active strain as otherwise that may kill the individual receiving the vaccine.
White blood cells produce antibodies. Antibiotics are a form of medicinal drugs so that gets rid of the other two options.
For part a, viruses do not produce antitoxins. Viruses are not affected by antibiotics, but are affected by anti-viral drugs. So the answer should be lives inside cells.
Vaccines always contain a weak, inactive form of the virus. You don't want to give an active strain as otherwise that may kill the individual receiving the vaccine.
White blood cells produce antibodies. Antibiotics are a form of medicinal drugs so that gets rid of the other two options.