Answer:
C generate income from a variety of different sources
Explanation:
The phrase "diversify its economy" in this context simply means "generate income from a variety of different sources."
This is because to diversify the economy means to enlarge the economy of a country or nation through different markets or production streams or sources, which includes entering a new field of operations.
Hence, in this case, the correct answer to the question is "generate income from a variety of different sources."
~Answer~
1. Eons
2. Eras
3. Periods
4. Epochs
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Coal was the major natural resource contributing to the Britain´s Industrial Revolution.