____ has a pet cat.

The correct answer is: Abel

Abel is a name of a person and hence it is a noun. Noun should always be written in capital letters wherever it comes in the sentence. But only the first letter should be capitalized instead of the whole letters writing in capitals. It is not the correct rule to write. In the same way, a noun' first letter should not be written in small letter. Therefore, Able is the correct form of writing.