What is a super dense gravitationally collapsed mass from which no light can escape called?

1) neutron star
2) pulsar
3) supernova
4) black hole

the assestment will probley apele with cause and effect

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

volts times amps 6 x 0.5 3w

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.