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Brian's aunt has cats. When Brian recently visited her, he started sneezing badly and believes that it was because he is

allergic to cats.
What would be the next step for Brian to form a hypothesis?
A by avoiding going to his aunt's house
B by wearing a nose mask near cats
C by visiting other households with cats
by visiting his aunt's house again with the cats outside

User Toby Hede
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2 Answers

5 votes
C, by doing this he can tell if it’s just that cat or other cats as well
User Mickmackusa
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1 vote
C because he can test to see if it is just her cats or others as well.
User Dani F
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