Question

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question 20
3 pts
light cannot escape the intense gravitational pull of a ____.
black hole
black dwarf
main-sequence star
red giant

Explanation:

• A black hole has such strong gravitational pull that even light cannot escape it.
• A black dwarf is a cooled - down white dwarf and does not have such extreme gravitational properties to trap light.
• A main - sequence star is in a stable state of nuclear fusion and does not trap light in this way.
• A red giant is a later stage of a star's life (after the main - sequence) but still does not have the gravitational pull to prevent light from escaping like a black hole.

Answer:

black hole