Question

black holes are
empty holes in space.
objects that can form from massive stars, with such strong gravity that even light cannot escape.
dense regions of space composed exclusively of dark matter.
dark and dense regions of space that matter is sucked into.
dark regions of new star formation that are so dense and dusty that no radiation can escape.

Explanation:

Black - holes are formed from massive stars that collapse under their own gravity. Their gravitational pull is so strong that the escape velocity exceeds the speed of light, meaning light cannot escape. They are not empty holes, not composed only of dark matter, not just regions matter is sucked into in a non - fundamental sense, and not related to new star formation in the described way.

Answer:

objects that can form from massive stars, with such strong gravity that even light cannot escape.