Final answer:
Policy committees meet annually.
Step-by-step explanation:
The subject of this question is Social Studies and the grade level is High School.
As a general rule, it is Congress that determines how frequently it meets. According to the Constitution, Congress must meet at least once a year. However, the first meeting of Congress begins at noon on January 3 of each year, unless otherwise specified by the members. Therefore, the correct answer to the question 'When do policy committees meet?' is Annually.