Analysis of test questions: The right to life and health is the basis for citizens to participate in all social activities and enjoy all other rights. The right to life and health is the first and most basic personal right of citizens, so A is correct, the right to education is a basic right of citizens, the right to supervision is a political right of citizens, and the right to personal freedom is an important personal right, but it is not the most basic personal right. Only a is correct, so choose a.