The Kansas-Nebraska Act:

ensured that the number of free and slave states would remain equal
repealed the Missouri Compromise and authorized the residents of both territories to determine the status of slavery
temporarily suspended the Missouri Compromise until the Kansas territory could determine the status of slavery
created the slave territory of Nebraska and the free state of Kansas

I'll be glad to check your answer.

repealed the Missouri Compromise and authorized the residents of both territories to determine the status of slavery

Right.

What is an abolitionist?

a runaway slave
*a person who wanted slavery outlawed
a slave-owner who treated his slaves fairly
a person who uses violence to advance their cause

i pick the one with star

Right.

if i post question on here and give u the answer i picked will u tell me if its right

Yes.