Which of the following best describes a black hole?
a. an object that is completely black in color.
b. a funnel-shaped, bottomless pit in the universe.
c. a place from which the escape velocity exceeds the speed of light.
d. an object that sucks in all the light from stars that are near it.

A black hole can be best described as:

C. A place from which the escape velocity exceeds the speed of light.

Explanation: A black hole is a region of spacetime exhibiting gravitational acceleration so strong that nothing, that is no particle or even electromagnetic radiation such as light can escape from it.

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.