Multiple choice

Directions: The question is a logical sequence of statements with a missing link, the location of which is shown parenthetically. From the five choices available you are required to choose the one which best fits the sequence logically.

In 1932, Carl David Anderson discovered the first anti–particle – the positron. By the 1950s the anti–proton and the anti–neutron had been discovered. The importance of these discoveries was not just the fact that Dirac’s theory had been proven. (.) This energy of mass annihilation is known as photon energy and it promises to be a major source for our energy requirements in the very near future.

  1. They had stumbled upon a potential minefield of anti-fusion energy.

  2. More importantly, a new and unprecedented form of energy had been discovered.

  3. It was rather initiation into a new era and a new definition of energy.

  4. It opened a Pandora’s Box for future energy requirements.

  5. The importance was rather in finding a new source of energy.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Only (2) fits in coherently with the preceding and the succeeding sentences.

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