Which of the following is the best example of what Ninian Smart called the "material dimension" of religion?
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A. The singing of "Amazing Grace" by people attending worship services in a Baptist church.
B. The feelings of joy and peace that worshippers at a Baptist church feel while singing "Amazing Grace."
C . A congregation of people singing "Amazing Grace" at a worship service in a Baptist church.
D. A hymnal (or song book) published by Hope Publishing Company kept in the pews of a Baptist church.