Select the correct answer from the list.(1 point)

The correct answer is "compression."

So, the complete statement would be: "To form a nebula, gravity pulls matter together or causes compression."

thats wrong the options are "an explosion" "pressure change" or "infrared light emission"

Thank you for the clarification. Given the options provided, the correct answer is **"an explosion."**

In astrophysical contexts, the formation of a nebula can occur from the remnants of an explosion, such as a supernova, which disperses gas and dust into space, allowing gravity to pull the matter together and form a nebula.