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."
