Question

question 37 1 pts what do most elliptical and spiral galaxies have at their cores? a cluster of exoplanets a large star a brown dwarf star a black hole

Explanation:

To determine the correct answer, we analyze each option:

• "A cluster of exoplanets": Exoplanets are planets outside our solar system, and galaxies' cores don't have exoplanet clusters.
• "A large star": A single large star can't be at the core of most elliptical and spiral galaxies as their cores require massive gravitational entities.
• "A brown dwarf star": Brown dwarfs are too small and not massive enough to be at the core of these galaxies.
• "A black hole": Astronomical evidence shows that most elliptical and spiral galaxies have supermassive black holes at their cores, which provide the necessary gravitational pull to hold the galaxy together.

Answer:

D. A black hole