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Which of the following is the most abundant element in the Universe _____________?

A) Oxygen
B) Carbon
C) Hydrogen
D) Helium

Correct Answer: C) Hydrogen

Reason: **Hydrogen** (H) is, by far, the most abundant element, accounting for roughly 75% of the Universe's normal matter mass. Related MCQs: Helium is the second most abundant element. | Oxygen is the most abundant element in the Earth's crust. | Stars and nebulae are primarily composed of Hydrogen and Helium. | The Sun is approximately 92% Hydrogen atoms.

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