Which of the following is a characteristic of a white dwarf star?

Answer 1

That can't be answered without knowing what multiple choice questions you were given :)

Answer 2

A characteristic of a white dwarf star is that it is very dense, with a mass comparable to that of the Sun but compressed into a much smaller volume. White dwarfs are the remnants of low to medium mass stars after they have exhausted their nuclear fuel and shed their outer layers. They are typically very hot, with surface temperatures ranging from 8,000 to 100,000 degrees Celsius.