Which observation(s)support(s)the idea that dark energy accounts for about 70% of the total mass- energy density of the universe?

Question

Quizplus · Accepted Answer

A and B are correct because they both provide evidence supporting the existence and effects of dark energy. A explains how dark energy, along with matter and dark matter, accounts for the temperature patterns in the cosmic microwave background, indicating its significant role in the universe's mass-energy density. B supports dark energy's existence by explaining its role in the observed acceleration of the universe's expansion, a phenomenon that cannot be explained by visible matter and dark matter alone. C, while mentioning a benefit of having a universe that appears flat, does not directly support the existence or effects of dark energy in the way A and B do.

Which Observation(s)support(s)the Idea That Dark Energy Accounts for About 70