Respuesta :
President pro tempore is your answer
The meaning of the above phrase is "temporary president", and is the acting president when the president & vice president is not available.
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Answer:
President Pro Tempore
Explanation:
A constitutionally recognized officer of the Senate who presides over the chamber in the absence of the vice president. The president pro tempore (or, "president for a time") is elected by the Senate and is, by custom, the senator of the majority party with the longest record of continuous service.