Answer:
E. The presiding officer of the Senate frequently allows junior senators to take turns presiding over sessions of the Senate.
Explanation:
The presiding officer of the Senate is the Vice President whose role is usually ceremonial as he has very little to do and is most usually a member of the majority party.
However, the statement that is not true about him is that the presiding officer of the Senate frequently allows junior senators to take turns presiding over sessions of the Senate