There is a few thiongs you can do.
If you are in school and working, my friend went in and spoke to the judge and said that he was a full time college student and working full time over the summer to pay for school. Before he got out another word, he was excused.
If you actually get asked questions in the selection by a lawyer, I was told you can say things within reason. Do not say you are racist. Things that do work is something along the lines of: “I believe anyone who is arrested is guilty”. Lawyers will get rid of you.