The correct option is B Both the assertion and reason are true but the reason is not the correct explanation for the assertion
Antibiotics are chemical substances obtained from some microbes such as fungi and bacteria that kill or retard the growth of other microbes.
The word antibiotic is derived from Greek. ‘Anti’ means against and ‘biotic’ means life. So, these chemicals work against the life of microbial agents. But they work in favor of human beings by killing pathogens in the body, hence they can be called ‘pro life’ agents.