Final answer:
The man suspected that a teenager stole his wallet and the correct way to confirm his suspicions would be to see a surveillance video.
Step-by-step explanation:
In this situation, the man suspected that a teenager stole his wallet. To confirm his suspicions, the man could use various methods such as finding it in his other pocket, realizing he left it at home, or seeing a surveillance video. The correct answer to this question would be option C, seeing a surveillance video as it would provide visual evidence of the teenager stealing the wallet.