3. The author stops using direct address.
When added to the word detect, the suffix which means "a person who" is -ive.
"A person who" means that you need to create a noun which refers to a person by adding that suffix. If you add -ive to detect, you will get the noun detective, which is obviously a person.
The word detectary doesn't exist, and the word detection doesn't refer to a person, but rather the act of detecting.
The answer is C: I ran into the house and happily screamed, “I got an A on my History test!”
Take notice of: I, me, we.
Answer: the answer is D.)
Explanation: