I believe the best option to be number 2. The sacrifices of fallen soldiers should be honored by survivors.
Explanation:
In this excerpt of the Gettysburg Address, Lincoln is not asking the audience to forget their differences and mourn; he does not say that the soldiers who have died would be happy with the end of the Civil War; and he also does not say what the soldiers died for was wasted.
Lincoln states that the fallen soldiers made a huge sacrifice for something they believed in. They left behind some unfinished work, even though they promoted advances. It is up to the living to honor their sacrifice by continuing what they fought for. The fallen soldiers battled for freedom and, according to Lincoln, that is the task remaining before the living: "<em>that from these honoured dead we take increased devotion to that cause for which they gave the last full measure of devotion; that we here highly resolve that these dead shall not have died in vain."</em>
