Read the following context and choose the best option to answer the question.
Context: I had to force myself to laugh , and there were about 3 - 4 Brown Bag fouls . Everyone 's minds were in the gutter . It was ridiculous .
Question: Why did they force themselves to laugh ?
Options: 
- They are not able to laugh at jokes unless forced to laugh .
 - They wanted to people to see them as a normal human being .
 - They wanted to fit in with the other people having fun .
 - They knew if they did nt laugh people wo nt worry about them .


They wanted to fit in with the other people having fun .