Choose the word that best completes the sentence:

The scientist made a ___ discovery that changed medicine.

Answer and explanation

Correct answer: A. remarkable

  1. Step 1: Use the meaning of the whole sentence: "remarkable" means worthy of notice.
  2. Step 2: This is the word that fits the context.
Answer
remarkable.
Why not the others: ordinary, hidden and accidental do not fit here.

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