Antibiotics are often effective treatments for diseases caused by

bacteria.

viruses.

some bacteria and some viruses.

all bacteria and all viruses.

The correct answer is bacteria.

Explanation:

Antibiotics are used in the treatment of bacterial infection. Antibiotics resist bacterial growth by several ways such as1 blocking the formation of peptidoglycan layer of the cell wall of bacteria as a result the bacteria become very much sensitive to osmotic lysis.

2 binding with either ribosomal subunits of bacteria thus preventing the formation of bacterial proteins.

3 blocking metabolic pathways which are essential for the growth of bacteria.