Correct Answer: Electrically operated machine are preferable to use
Explanation:
From Statement I and II, we can conclude that electricity is one of the mode for providing energy. So, option (a) and (b) are ruled out. Option (c) is not correct as numbers are not talked about. Statements III and IV, talk about two basic advantages of electrically operated machines So, it can be inferred that electrically operated machines are preferable to use. So, option (d) is correct.
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