Refer to the Newsela article "Real-Life Pet Detective Helps Find Lost Animals." Which answer choice is a central idea of "Real-Life Pet Detective Helps Find Lost Animals"?

1. Katz uses the same tools to find pets as other pet detectives use.

2. Pet detectives use technology to help them conduct research.

3. Pet detectives use facts about pets' behavior to find lost pets.

4. Katz finds that people often lie about lost pets.