Read these sentences from the Newsela article "Shelter Dog Protects Owner with Epilepsy."

"I could finally sleep in my room alone, just me and Toby," Parker wrote in his story to Petco... "Toby's life changed, too. He went from being a stray dog, to a rescue, to the most important part of my medical team."

How do these sentences contribute to the development of the idea that Toby is an asset to Parker?

A. They give evidence that Toby was accepted into Parker's household.

B. They make sure readers understand the dangers of epilepsy.

C.They keep the focus on Toby since the story is not about Parker.

D.They show that with Toby's help, Parker can gain some independence.
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