Explanation:
Like most stars in our universe, the Sun is on the main sequence stage of its life. This means nuclear fusion reactions in its core fused hydrogen into helium. However, this process cannot last forever since there is a finite amount of hydrogen in the core of the Sun. Currently it has more than 72% hydrogen.
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<span>The answer is A. Providing better health facilities to underdeveloped countries. Why? Because by providing health and care to underdeveloped countries, one can help contain outbreaks and contamination among populations which indirectly impacts the home nation. Successful examples of this are the Poliovirus and how it was contained.</span>
