Which of the following lists the correct requirements for a black hole to form?

a. the star must be 10 to 28 times larger than earth’s sun, and a supernova explosion must not have occurred.

b. the star must be 29 times larger than earth’s sun, and a supernova explosion must not have occurred.

c. the star must be 10 to 28 times larger than earth’s sun, and a supernova explosion must have occurred.

d. the star must be 29 times larger than earth’s sun, and a supernova explosion must have occurred.

The correct requirement for a black hole to form is:

C. The star must be 10 to 28 times larger than Earth’s sun, and a supernova explosion must have occurred.

Explanation: The least star that is larger than the sun is 10 times larger and a supernova explosion would have happen before a black hole to form.

The star must be 10 to 28 times larger than Earth’s sun, and a supernova explosion must have occurred.

Option: (A)

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.

the correct answer is c