The important result of the Union victory at Vicksburg was that the Union now controlled the Mississippi River. The correct option among all the options given in the question is option "A". This also helped the Union to cut off most of the Western States from the hands of the Confederate army. Also the Union had the control over the food supplies and this made the Confederate army surrender quickly.
..........Wym how...........✨
is the legislative branch
Here's a better idea. PLAN AHEAD, CHILD. I've been in your place. It's rough, but work on it every chance you have before hand! It doesn't pay off to be lazy.