Question

choose the paragraph in the section \how big are black holes?\ that suggests that a black holes mass can be much greater than its size.

a the most common type of medium - sized black holes is called \stellar.\ the mass of a stellar black hole can be up to 20 times greater than the mass of the sun. it can fit inside a ball with a diameter of about 10 miles. dozens of stellar black holes may exist within the milky way galaxy, a large group of stars held together by gravity that is home to earth and the sun.

b scientific evidence suggests that every large galaxy contains a supermassive black hole at its center. the supermassive black hole at the center of the milky way galaxy is called sagittarius a. it has a mass equal to about 4 million suns. it would fit inside a ball with a diameter about the size of the sun.

c the smallest ones are known as primordial black holes. \primordial\ is a word that means something that existed at the beginning scientists believe this type of black hole

Explanation:

Paragraph B states a supermassive black hole has a mass equal to 4 million suns but fits inside a ball the size of the sun, directly showing its mass is vastly greater than its size. Paragraph A's stellar black hole has mass 20x the sun in a 10-mile diameter, but the mass-to-size disparity is far smaller than in B. Paragraph C is incomplete and does not address the mass-size relationship.

Answer:

B. Scientific evidence suggests that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns. It would fit inside a ball with a diameter about the size of the sun.