In the passage, 'convincingly' is closest in meaning to:

The Inca and earlier Andean societies kept records with the quipu, a set of cords hanging from a main cord. Knots tied at different heights and in different styles stood for numbers, and the colours of the cords may have indicated the type of goods counted, such as llamas or maize. Specialists called quipucamayocs kept and read these records for the state. Scholars agree that many quipus recorded quantities. Some researchers suspect that a few also held other kinds of information, perhaps even stories, but no one has yet shown this convincingly, and the question remains open.

Answer and explanation

Correct answer: B. in a way that gives strong proof

  1. Step 1: The author says nobody has shown the story idea convincingly, so the idea lacks strong evidence.
  2. Step 2: 'Convincingly' therefore means with proof that persuades.
Answer
in a way that gives strong proof.
Why not the others: The other phrases do not relate to showing evidence.

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