In the spring and the fall when trees are releasing pollen jeremy's eyes and nose water causing him a considerable amount of discomfort. when anyone asks him if he is ok, his reply is always, "yes, it is just allergies." how can pollen create such a reaction in jeremy? a) the pollen is sticking to jeremy's eyes causing an irritation. b) the pollen is entering jeremy's respiratory system and his immune cells are attacking it causing a reaction. c) the pollen is accumulating in jeremy's nasal passages and his nose is running to get rid of it. d) it is unknown why pollen creates a reaction in some people

The pollen allergies are common during the spring and the fall, as during this time, the plants release their pollen grains for fertilization. These pollens can cause allergic reactions in some individuals. This allergic reaction is the result of the release of a certain chemical known as 'histamine'. The release of histamine in the body is triggered by the presence of the pollen grains in the respiratory system, and it causes reactions like water  eyes and runny nose.

Hence, the correct answer is 'Option B'.

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