Multiple choice

The newly discovered ore is being extracted by ......... of a huge robotic arm.

  1. mean

  2. means

  3. meant

  4. meanings
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The phrase 'by means of' is an idiom that means 'using' or 'through'. The sentence means the ore is being extracted through the use of a huge robotic arm. 'Means' here refers to a method or way of doing something.

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