What is the function of hydrogen gas in a star-forming region?

Answer

It is the primary fuel source that collapses until core pressure ignites nuclear fusion

Hydrogen gas serves as the primary fuel source; stars begin to form when enough of this gas collapses under gravity until the core conditions trigger nuclear fusion, converting hydrogen into helium.

What is the function of hydrogen gas in a star-forming region?
SpaceastronomycompositionnebulaGases