Answer:
Its D.) nebulae
Explanation:
the other answer is wrong. do not pick protostars
d) nebulae
A nebula is a giant cloud of dust and gas in space.
Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova.
Other nebulae are regions where new stars are beginning to form. For this reason, some nebulae are called "star nurseries."
Due to fusion, stars evolve due to two factors: gravity and pressure.
The star collapses when gravity exceeds pressure, and the star expands when pressure overcomes gravity.
The evolution of stars is driven by nuclear fusion and fission events in the stars.
The mass of the stars determines their final stage.
Therefore,
Nebulae is the origin of all stars.
Learn more about Nebulae here: https://brainly.com/question/21420531
#SPJ2
