Discussion
Statement: Should coal engines be replaced by electric engines in trains?
Arguments:
1. Yes. Coal engines cause a lot of pollution.
2. Yes. Electric engines are good on performance, easy to operate and low on maintenance.
3. No. India does not produce enough electricity to fulfil its domestic needs also.
Answer: B
Clearly, electric engines shall be smoke-free and thus not cause pollution as the coal engines. They also run at higher speeds and perform better. Thus, both I and II hold strong. Argument III does not provide a convincing reason and hence does not hold strong
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