Assertion- All pathogens are parasites but all parasites are not pathogens.Reason- Majority of the parasites confer benefits to the host.(a)Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.(b)Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.(c)Assertion is correct but Reason is incorrect.(d)Both Assertion and Reason are incorrect.

The correct answer is (b) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

The assertion that all pathogens are parasites is correct. Pathogens are organisms (such as bacteria, viruses, fungi, or parasites) that cause disease in their host organisms. Parasites, on the other hand, are organisms that live on or inside another organism (the host) and derive their nourishment from the host. Pathogens can be considered a subset of parasites because they rely on their host for survival and reproduction, similar to other parasites.

The reason provided, which states that the majority of parasites confer benefits to the host, is not the correct explanation for the assertion. While it is true that some parasites can provide benefits to their hosts (known as mutualistic parasites), this is not applicable to all parasites. Many parasites can cause harm, disease, or negative effects on their hosts. Therefore, the reason does not fully support the assertion.