Ava’s best friend has an indoor cat. Ava notices that she sneezes every time that she visits her friend. Ava suspects that she is allergic to cats but is unsure. What is the best thing for Ava to do next?

Ava has noticed a pattern, but sneezing during visits does not prove that the cat is the cause. The best next step is to have an allergist evaluate her and test whether she is allergic. Choice C, testing her suspicion with an allergist, helps identify the cause before she makes decisions such as avoiding cats or visits.

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