Answer:
The correct option is: b) may also be an opportunistic pathogen
Explanation:
Commensalism is a kind of symbiotic relationship between two different biological organisms. <u>In this interaction, one of the organism is benefited whereas the other organism is neither harmed nor benefited.</u>
The organism that gains benefits from the host is known as the commensal. The commensal may obtain benefits like shelter, nutrients, protection, and locomotion.
<u>However, the commensal bacteria can be an opportunistic pathogen.</u>
Opportunistic pathogens are the pathogens that can cause an infection or a disease if the host has a weak immune system.