Question

some objects in space are created from clouds of gas and dust. what will happen if the cloud does not have enough mass? a core will form. a star will not form. a protostar will form. a nebula will not form.

Explanation:

To determine the answer, we analyze each option:

• A core forming requires sufficient mass for gravitational collapse, so a low - mass cloud is unlikely to form a core.
• Star formation needs a certain amount of mass (the Jeans mass) for gravitational collapse to start and sustain. If the cloud lacks enough mass, the gravitational force won't be strong enough to overcome thermal pressure, and a star won't form.
• A protostar is an early stage of star formation, which also requires enough mass to form, so a low - mass cloud can't form a protostar.
• Nebulas are the clouds of gas and dust themselves, so the cloud (nebula) already exists, and its mass doesn't prevent the nebula from existing.

Answer:

B. A star will not form.