(A) 5 months
(B) 1 year
(C) ** 2 months
(D) 8 months
EXPLANATIONS BELOW
Concept note-1: -From August 1863 to February 1865, there were three major and eight minor bombardments from US Army artillery located on Morris Island and the US Navy blockade fleet. The fort was under direct fire a total of 280 days during that 18-month timeframe. It was to be the longest siege under fire in US military history.
Concept note-2: -Bombardment of Fort Sumter, Charleston Harbor: 12th & 13th of April, 1861.
Concept note-3: -So, Confederate leaders ordered an attack. Just before sunrise on April 12, 1861, a shell exploded above Fort Sumter. It was the first shot fired in the American Civil War. Major Robert Anderson led the small force of U.S. soldiers at Fort Sumter.
Concept note-4: -The first engagement of the Civil War took place at Fort Sumter on April 12 and 13, 1861. After 34 hours of fighting, the Union surrendered the fort to the Confederates.