Which hypothesis is most supported by astronomers

There´s a similar question in with the same questions. Those options were:

The universe is currently expanding and will continue to expand.

Stars could burn out, causing the universe to become dark and cold.

Gravity could pull galaxies back together, causing a reverse of the big bang.

Dark energy will pull the universe together to form a massive black hole.

ANSWER: The universe is currently expanding and will continue to expand.

The universe is currently expanding and will continue to expand.

Explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.