The correct answer is A) because he now had to repair the nation.
As the civil war drew to a close, President Lincoln's rhetoric changed because he now had to repair the nation.
On April 12, 1861, the Civil War began and ended on April 9, 1865, when General Robert E. Lee surrendered his Confederate Army to General Ulysses S. Grant, leader of the Union Army in Virginia. President Abraham Lincoln had to change his rhetoric because he was the President of the United States, both of the Union and the Confederate states. His attitude should be a conciliatory one, not a confrontational one anymore. His duty was to heal the deep wounds that existed in a divided nation.
