The correct answer is D) Catholics.
The religious group that did not expand their membership by great numbers during the Second Great Awakening was Catholics.
The Second Great Awakening in the United States started in 1790 and ended in 1840. It was a time in that Protestant religions had a revival and many people became followers of those religions. Methodist, Baptists and the Seventh-Day Adventist Church were one of the religions that became more popular during the revival. But the religious group that did not expand their membership by great numbers during the Second Great Awakening was Catholics.