Final answer:
The vet would most likely advise Cara to keep the cat inside to prevent exposure to fleas and ticks and to clean all bedding and surfaces to prevent the spread of ringworm.
Step-by-step explanation:
The vet would most likely advise Cara to keep the cat inside so that it is not exposed to fleas or ticks. This is because fleas and ticks can carry and transmit ringworm to cats. By keeping the cat inside, Cara can prevent the cat from being exposed to these parasites and reduce the risk of another infection.
Additionally, the vet may advise Cara to clean all the bedding and surfaces that the cat has been on. This is because ringworm spores can survive on surfaces and bedding, so it's important to regularly clean and disinfect these areas to prevent the spread of the infection.