Question

at the battle of chancellorsville, general hooker planned to
capture richmond.
surround lee’s forces.
kill \stonewall\ jackson.
replace general burnside.

Explanation:

In the Battle of Chancellorsville, General Hooker's plan was to surround Lee's forces. The other options: capturing Richmond was not the immediate plan here, killing Stonewall Jackson was not a planned objective (his wounding was accidental), and replacing General Burnside was not part of the battle plan.

Answer:

surround Lee’s forces.