Question

Streptomycin, a type of antibiotic, is now less effective in treating TB worldwide.

Which of the following could be a reason for this?
A There is an increase in the number of people infected with drug-resistant strains.
B The incidence of HIV infection is increasing, activating previously inactive Mycobacterium infections.
с Fewer people are living in isolated rural areas and overcrowding occurs in inner cities.
D Antibiotics such as streptomycin are not effective as antiviral drugs.​

Answer 1

Answer:

a

Explanation:

There is an increase in the number