A delegate from a Southern state will most likely respond by saying "Yes, they are equal to white people and should be counted."
The quoted word "should slaves be counted?" is a question that is used to determine population measuring metric for every states during the constitutional convention.
Thus, the delegate representing the Southern state will most likely respond by saying "Yes, they are equal to white people and should be counted." because its helps increase their population which aids better resources allocation.
Therefore, the Option C is correct.
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