Grierson was forced to go south.
Answer: Option C
Explanation:
Benjamin H. Grierson was the volunteer in Union Army's Cavalary General during the Civil War. Vicksburg is a place situated in western Mississippi that was under the control of the Confederate army. Benjamin was supposed to move towards the west to conduct a daring attack in the Vicksburg against confederate.
But he moved towards south since Major General planned on something big than attacking Vicksburg directly. The Union army was divided into three divisions. Grierson rode south with 1,700 men from La Grange starting his raid at the dawn. He struggled a lot while getting to the Vicksburg and wrote two other cavalries the easy way to reach the destination.