Answer:
A. It was supported by the people in Lowcountry.
Step-by-step explanation:
When the United States Constitution was being debated, the level of support it has in South Carolina was the support of the people in Lowcountry.
This is evident in the fact that the Lowcountry of South Carolina was in support of the National government.
The Lowcountry of South Carolina' economy at the time was based on agriculture, particularly the plantation of rice and indigo with slaves as labor.