The correct answer is ID. t called a state convention and voted to secede from the Union.
Step-by-step explanation
South Carolina is a state of the United States of America located in the South region. In 1860, when Abraham Lincoln won the presidential election, he posed a threat to the people of South Carolina because many of them owned slaves, and the new president had expressed his desire to abolish slavery. Therefore, South Carolina called a state convention to separate from the United States on December 20 of that year. So the correct answer is D.