Sara observes that there are more of a certain species of mushroom in the shaded areas of her yard than in the sunny ones. From this observation, what would be a question that leads to a testable hypothesis? Are mushrooms more attractive in shade? Can mushrooms be used to fertilize a garden? Are mushrooms a good addition to a garden? Do these mushrooms grow better in cooler temperatures?

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

The answer is a because - is an direction