D.
\( \alpha \)-particle, \( \beta \) rays and \( \gamma \)-rays
E.
\( \alpha \) -particle, \( \beta \) rays, \( \gamma \)-rays and X-rays
Correct Answer: Option D
Explanation
Natural radioactivity is the radioactivity found in nature, such as uranium, thorium ores, and natural nuclear fuels. It consists of the emission of radiations such as α-particles, β-rays, and γ-rays
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