The majority of visible stars are stars.
a. neutron
b. red giant
c. white dwarf
d. main sequence

The correct answer is D. The majority of visible stars are main sequence stars.

Explanation:

The Main Sequence in a Hertzsprung-Russell diagram is a curve along which most stars are. A star in the main series is called a Main Sequence star.

The sun is an example of a main series star: it has been there for about 4.5 billion years and will continue so for another about 4.5 billion years. After the hydrogen in the core of the sun has been consumed, it will begin to burn helium, swell and become a red giant star.

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.