When a person's eosinophil count is elevated, it is most likely because they have recently had an allergic reaction or been infected by a parasitic worm.
This refers to a component of the white blood cells which is responsible for ensuring that the cells are protected from parasites and infections in the body system.
They are produced by the bone marrow and they boost inflammatory response as a result of the allergic reactions such as exposure to pollen grains or dust being experienced.
This is therefore why allergic reaction was chosen as the most appropriate choice in this type of scenario.
Read more about Eosinophil here https://brainly.com/question/17083637
#SPJ1