In which sentence from "black hole beginnings" is a cause underlined?
more matter mounts up on the outside, increasing the pressure on the inside.
as the star material gathers, its inward pressure grows.
the gases blast out as the star goes supernova.
it expands like hot air inside a balloon and pushes outward from the center.

Delegates: representatives who cast votes at a political party's national convention. binding: if a primary or caucus is “binding” that means the delegates won in that contest are legally bound to vote for a particular candidate at the parties national convention.a primary is a preliminary election used to determine a party's nominee for a specific office. the winner of the party's caucus, or primary, wins the party nomination for that state. then the delegates meet at their party's national party convention, which is a formal gathering of all party delegates from all states.