Question

What is the difference between a regular session of Congress and a special session of Congress?

Answer 1

Session

period of time which, each year, Congress assembles and conducts business

where special session is extra ordinary and deal with emergency

so correct option is

 A regular session is scheduled for a specific period of time each year, while a special session is called by the president at any time

so its D 

hope it helps

Answer 2

Answer:

D) A regular session is scheduled for a specific period of time each year, while a special session is called by the president at any time.

Explanation:

A special session of the congress, also called an extraordinary session, is when the congressmen are gathered outside of the established session time in order to finish debating and voting uncomplete tasks that are often delayed for disagreements between the political parties. A special session can be called by the spolesperson of the legislature, by the president at any time  or by voting of the legislature on a regular session.