Question

What are two important responsibilities of the vice president?

to preside over the House of Representatives and to serve as president if an acting president dies or leaves office
to preside over the Senate and to serve as president if an acting president dies or leaves office
to preside over Congress and to serve as president if an acting president dies or leaves office
to preside over the Supreme Court and to serve as president if an acting president dies or leaves office

Answer 1

To preside over senate and act in as president if the president in incapable of doing so or he/she dies.
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Answer 2

thx