The correct answer is C) keeping Britain from supporting the Confederacy.
What was not a result of the Emancipation Proclamation was "keeping Britain from supporting the Confederacy."
President Lincoln was desperately in need of good news at the battlefront of the Civil War. The news arrived after the victory of the Union Army in the Antietam Battle. So on September 22, 1862, President Abraham Lincoln delivered the preliminary Emancipation Proclamation, refocusing the purpose of the war on the issue of slavery in America. In the proclamation, Lincoln said that slaves in the Confederated states should be free within the next 100 days. None of the southern states obeyed, and on the 1st of January, 1863, Lincoln formally proclaimed the Emancipation of all slaves in the Confederate states.