Answer:
c. serious
Step-by-step explanation:
The tone of the Gettysburg Address by Abraham Lincoln is generally considered to be serious. In this historic speech, delivered during the American Civil War, Lincoln addressed the solemn occasion of the dedication of the Soldiers' National Cemetery in Gettysburg, Pennsylvania. The speech reflects on the principles of equality and the sacrifices made by those who fought in the Civil War. The tone is somber and reflective, conveying a sense of reverence for the fallen soldiers and a commitment to the principles of democracy. Therefore, the correct answer is:
C. Serious