HI There Lizzie!
A. Having support from your family: this is a good thing to do. not what gangs do. Gangs let you do dangerous things, for example Hazing.
B. Spending time in jail: This is what gangs mostly like to get after doing bad things. Yet, they could sometimes spend their whole life depending what or how cruel they did. This can or could be the place for them where everything ends. Even their life.
C. Getting a good job: This is also a good thing, getting a good job is part of your life career. Again, Gangs are mean and bad people. What they do is like steal, kidnap, hazing, killing, etc.
D. Avoiding a police record: Well, this is good to do. You don't wanna end up being in jail. You try to do good stuff to keep getting out of police/criminal records.
Well, as you can see, A,C, and D are good things that people do. B is the only left. And is explained why. Gangs, are basically you know, people who are bad, stealing, killing kidnapping, hazing, etc. They are groups of bad people. That's why a single person of a Gang is called "Gangster".
Your answer is B.