I can't decide whether I would like to be a anthropologist or a lawyer.?

YOur electives in high school will not matter at all. It will matter that you major in Anthropology or Sociology or History or a combination of those things if you would like to be an anthropologist. To be a lawyer, highschool won't matter either except that you get good grades, get into a good school and get good grades in whatever major you choose. The most beneficial majors for prelaw students would be English (you have to know a lot of words) history, political science or something that requires many hours of technical writing skills. Any major is acceptable when applying to law school even physics if you wanted to represent say construction companies and need to understand the in and outs of structural matters. Law school is another 3 or 4 years after 4 years of undergraduate college and anthropology depends. You could stop with a bachelor's degree and try to find a job or continue and get a master's or PHD, Those vary depending on how long you will take to complete the programs.