It occurred to us after we got inside the building that we were n't taking any pictures , so we started as soon as we got outside . We walked around the front and took a picture of the mission . There was a line of people walking inside .
According to the above context, choose the best option to answer the following question.
Question: What does the narrator need to do ?
Options:
- They need to memorialize the trip .
 - None of the above choices .
 - They need to go for a walk .
 - They need to complete the mission .


They need to memorialize the trip .