Which of Harriet Martineau’s books is a foundational treatise on sociological data collection? A. Retrospect of Western Travel B. How to Observe Morals and Manners C. Society in America D. The Positive Philosophy of Auguste Comte E. Eastern Life Present and Past

It's B

Explanation:

Harriet Martineau's book that serves as a foundational treatise on sociological data collection is "How to Observe Morals and Manners (1838)." In this book she articulates the principles and methods of empirical social research.

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