If a committee agrees to a “markup session” for a bill, this means that
a.
committees are going to approve the bill and send it to the president for signing
b.
committees are going to amend the proposed bill
c.
the president is going to sign the bill in a ceremony with its sponsors
d.
a committee is sending it back down to a subcommittee for approval

If a committee agrees to a "markup session" for a bill, this means that B. committees are going to amend the proposed bill.

Markup can be defined as the process by which a congressional committee debates, amends o rewrites a given bill. Committees do not necessarily change the texts, but consider prosible changes to the bill, recommend what amendments the members of the House should consider when voting on the floor, and could even include a possible substitute for a text.

This process ends when the committee agrees to report the bill to the chamber by majority vote.  

to demand women’s suffrage