Question

How can tides solve the power problem of the world?

• A. Electricity is being produced through tidal waves.
• B. Tidal waves keep the steamers in motion.
• C. Tidal waves melt the ice and save power.
• D. None of the above.

Answer 1

Answer: (A)

Electricity is being produced through tidal waves.

The word, 'harness' means 'to control and make use of (natural resources), especially to produce energy'. The passage mentions that: 'For the purpose of generating electricity, tidal waves are harnessed'. This means that the tidal waves are brought under control in order to produce electricity or electric power. This, in turn, can reduce or solve the power problem of the world. Hence, option A is correct.

The word, 'steamer' refers to a ship, boat, or locomotive powered by steam. Keeping the steamers in motion cannot produce power. Melting the ice cannot help save power or generate power. Hence, options B and C are incorrect.

Option D is incorrect as option A is the correct answer.