Final answer:
The speaker of the house or the president pro tempore would be the roles that call meetings to order and decide when to adjourn in a legislative context.
Step-by-step explanation:
The blank in the statement "The ____________________ of the LREC is an appointed member and calls all meetings to order as well as decides adjournment," is typically filled by referencing a leadership position such as the speaker of the house or the president pro tempore of the Senate, depending on the legislative context. These individuals are vested with the authority to call meetings to order and adjourn them.
Each House has the power to judge the elections, returns, and qualifications of its members and requires a majority to constitute a quorum to conduct business. However, a smaller number may adjourn from day to day if necessary. Furthermore, the Constitution mandates that Congress must assemble at least once each year, on a date that is currently set as the first Monday in December unless another date is specified by law.