Answer 15 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? by avoiding going to his aunt's house by wearing a nose mask near cats by visiting other households with cats by visiting his aunt's house again with the cats outside

I Believe it would be C by visiting other households with cats.

Hi!

The most appropriate step Brian would take to formulate the hypothesis would be by visiting other households with cats.

What Brian needs to confirm is that he is actually allergic to cats, and to do that he must venture on to explore if the same sneezing reaction as observed with his aunt's cat is elicited when he is around other cats.

It is possible that some other environmental factor may have causes this allergic reaction that may be present in his aunt's house, and may not necessarily be the cat, so it would not help Brian's hypothesis to revisit his aunt.

By wearing a nose mask around cats and avoiding his aunt's house would not help his hypothesis because he would not be able to confirm that the cats are causing the allergy, and will remain in doubt.

Hope this helps!