A sponsor is a member of congress who is willing to introduce and back the legislation.
A chamber is a legislative meeting hall.
One of the two chambers in government, either the senate or the house of representatives: house of congress
Activity concerning a bill which may include debates and compromises: floor action.
The time when congress is active and members are present, fulfilling their respective duties: in session
Great plains is known for the mountains
<span>Assuming that this is referring to the same list of options that was posted before with this question, the best option is "exercise" since it can clear the mind. </span>