What type of substance is used to control the spread of bacteria in the body?

The correct answer is that antibiotics are substances used to control the spread of bacteria in the body. Antibiotics work by targeting specific functions essential to the growth and reproduction of bacteria, effectively stopping or slowing their growth. This allows the body’s immune system to take over and eliminate the infection.

Antivirals, on the other hand, are designed to combat viral infections, not bacterial ones. They function differently from antibiotics, as they inhibit the development and replication of viruses, making them ineffective against bacteria.

Analgesics refer to medications that relieve pain without affecting consciousness. While they are crucial in treating symptoms, they do not address the underlying cause of bacterial infections.

Antiseptics are substances applied to the skin or mucous membranes to reduce the risk of infection by killing or inhibiting the growth of pathogens, but they are not typically used within the body to treat existing bacterial infections. Instead, they are usually applied externally.

Thus, antibiotics are the correct choice for controlling bacterial infections within the body.