What are the 3 positions in line for the President after the VP?

"The order of succession specifies that the office passes to the vice president; if the vice presidency is simultaneously vacant, or if the vice president is also incapacitated, the powers and duties of the presidency pass to the speaker of the House of Representatives, president pro tempore of the Senate, and then Cabinet secretaries, depending on eligibility."

Explanation:

#2 the answer is d

#3 the answer is a

#4 the answer is b