Choose the best option to fill the gaps in the following sentences:

Oxygen is necessary to life. Nothing can live without it. It was .... a century ago

  • A invented
  • B found out
  • C discovered
  • D learnt
  • E extracted
jamb 1980english-language

The correct answer is C. discovered

The correct answer is Discovered. The sentence should read: “Oxygen is necessary to life. Nothing can live without it. It was discovered a century ago.”

This is because oxygen, being a natural element, was not invented or created by humans, but its existence and properties were discovered.

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