Context: The police officers ascended the steps and checked every passport individually . I was again surprised when I did n't get my passport stamped . Once you cross one border within Central America , a stamp is not necessary until you leave the region .
Question: Why did the police check each passport ?
Option 0: To find a lost child based on their ID
Option 1: To help out the border control agents
Option 2: To try to return a laptop that they found
Option 3: To check for criminals entering the country
Answer: 3