Although he spent his career solving abstract problems, Professor Ali Rahman says his greatest insight came while weeding his garden. He had been stuck on a proof for months, trying ever more complex approaches. Then, kneeling beside a row of beans, he realised the answer was simpler than anything he had attempted. 'I had been looking for a clever solution,' he recalls, 'when what the problem needed was patience.' Psychologists describe the experience as 'incubation', in which the mind continues to work unconsciously on a problem once we stop thinking about it directly. Rahman is more modest: he credits the beans.

Answer and explanation

Correct answer: D. The solution was simpler than he had assumed

  1. Step 1: Find the part of the text that deals with this. Step 2. Third sentence. Answer: The solution was simpler than he had assumed. Why not the others: The answer was simpler.

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