An aptitude for making desirable discoveries by accident.
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serenity
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serendipity
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sincerity
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senility
B
Correct answer
Explanation
Serendipity means finding valuable or agreeable things not sought for - making pleasant discoveries by chance. Serenity is calmness, sincerity is honesty, and senility is mental deterioration. The word comes from 'Serendip' (old name for Sri Lanka) from a Persian fairy tale.