<u>Directions :</u> Following question consists of a statement followed by three arguments I, II and III . You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument.<br><br><u>Statement :</u> Should coal engines be replaced by electric engines in trains?<br><br><u>Arguments :</u><br> I. Yes. Coal engines cause a lot of pollution.<br>II. Yes. Electric engines are good on performance, easy to operate and low on maintenance.<br>III. No. India does not produce enough electricity to fulfil its domestic needs also.

Correct Answer: Only I and II are strong
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.