Choose the meaning of the underlined idiomatic phrase: The stories of senior citizens in distressed economic conditions because of defaulted student loans are merely the canary in the coal mine. [Washington Post]
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Question context
This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.