Statement: Should new big industries be started in Mumbai? Arguments : I. Yes. It will create job opportunities for many people. II. No. Mumbai already has some big industries.

An argument is strong when it gives an important reason directly related to the question. Argument I does: new industries would create jobs, a real benefit that bears on whether they should be started. Argument II only states that some big industries already exist, without saying why more would do harm, so it is weak. Only argument I is strong; the two are not alternatives, so the either-or answer does not fit, and because I is strong, the answer rejecting both fails.