Which statement best describes the battle of antietam?
a it was fought in the south and became a major turning point of the war.
b it was the last major battle of the war involving general robert e. lee.
c it was the first major battle on union soil and the bloodiest day in u.s. battle history.
d it was the shortest civil war battle and contained the least amount of casualties.

The Battle of Antietam was the first major battle on Union soil and the bloodiest day in U.S. battle history. Option C is correct,

In this battle, both sides had losses, but it was a victory for the North.

This constituted a battle of the American Civil War, fought on September 17, 1862, between Confederate General Robert E. Lee's Army of Northern Virginia and Union General George B. McClellan's Army of the Potomac, near Sharpsburg, Maryland and Antietam Creek.