Question

select the correct answer
which fact represents evidence for the big bang theory?
a. every object located in the universe emits radiation.
b. the mass that makes up the universe consists of 25% helium.
c. the sun around which earth revolves is not the biggest star in the universe
d. human eyes cannot perceive all forms of electromagnetic radiation.
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Explanation:

The Big Bang theory suggests that the early universe was hot and dense. As it expanded and cooled, light was released. The cosmic microwave background radiation (which is a form of radiation that every object in the universe emits to some extent, related to the residual heat from the Big Bang) is one of the key evidences. Also, the abundance of light elements like helium (about 25% of the mass of the universe is helium, which is consistent with the predictions of the Big Bang nucleosynthesis). Option C is just a fact about stars and has no relation to the Big Bang theory. Option D is about human visual perception and not relevant to the Big Bang theory.

Answer:

B. The mass that makes up the universe consists of 25% helium.