The answer is A! Lincoln often referred to God in his speech.
Answer:
Letter: A. (All citizens)
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
B. The appeal of freedom and the containment of Communism