My last answer was deleted for being pointless, but I had to add more letters for the correct, succinct answer to be published. The right answer is "a sentence".
The most common is Chicago style.
Answer:
When you use more than one adjective, you have to put them in the right order, according to type. It is correct to write, "I have a small red car", but it is not correct to write, "I have a red small car". When you use two adjectives together, you sometimes use "and" between them and you sometimes don't.
Explanation:
He uses the word "careless"
Cats make good house pets. It's the main idea in the sentence, and it's independent also. The other clause is dependent, so it is not the main clause.