Self-study
People who are allergic to cats are actually allergic to certain proteins found in the animals' skin secretions and saliva; which particular proteins are responsible, however, varies from allergy sufferer to allergy sufferer. █████ ███ ████ ████ ████ ███ ██████ ██████ ██████ █████ ████████████ █████ ██ ██ ████ █████ ██ █ ███ █████████ ██ █████████ ████████ ██████████ ████████ ██ ██ ██████ ███ █ █████ ███ ██ █████ ██ ████████ ████████ ██ ██████████ ███ ████████████ ███ ███ ████████ ██ █████
Summary
People with cat allergies are allergic to certain proteins in a cat’s skin secretions and saliva. It depends on the allergy sufferer which proteins are responsible for an allergic reaction. There is no such thing as a truly hypoallergenic cat, because all cats shed skin and spread saliva around the environment. However, a given cat will often cause an allergic reaction in only some people allergic to cats.
Strongly Supported Conclusions
Different cats have different proteins in their skin secretions and saliva.
10.
Which one of the following ██████████ ██ ████ ████████ █████████ ██ ███ ███████████ ██████
a
Any particular individual ████ ██ ████████ ██ ████ ██████ ██ ███ ███ ███ ██ ███████
This answer is unsupported. First, we cannot say that all individuals have cat allergies based on the stimulus. Second, the stimulus never indicates that cat breeds are a factor in determining allergic reactions.
b
No cat is ███████ ██ ███████ ██ ████████ ████████ ██ ███ █████ ██ ███████ ██████████
This answer is unsupported. We only know from the stimulus that it is common for a given cat to cause allergic reactions in some people but not others. There could be a cat in existence that causes a reaction in all cat allergy sufferers.
c
Not all cats ███ █████████ ████ ███████ ██ ███ ████████ █████████ ██ █████ ████ ██████████ ███ ███████
This answer is strongly supported. If different people react to different proteins, and it’s common for some cats to cause allergic reactions in some but not all people, then cats must differ in their allergy-causing proteins.
d
The allergic reactions ██ ████ ██████ ███ ███ ████████ ██ ████ ███ ████ ███████ ████ ███ ████████ █████████ ██ █████ ███████ ██████████
This answer is unsupported. We don’t know from the stimulus how intense an allergic reaction to a cat could be, let alone other allergies.
e
There is no ███ ██ ███████ ███████ █ █████ ███ ████ ███████ ██ ████████ ████████ ██ █ ██████████ ███████ █████████
This answer is unsupported. If we know what proteins a particular person is allergic to and what proteins a particular cat secretes, it could be possible to predict an allergic reaction.