The answer is B: To convince Americans that the war was worth continuing
The Gettysburg Address was the speech delivered by Abraham Lincoln at the dedication ceremony for the national cemetery at Gettysburg. In his speech he recognized and honored the effort of the fallen soldier in the American Civil War ongoing.
His main purpose was to give American encouraging words to continue the war, he stated "It is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced" and "....that we here highly resolve that these dead shall not have died in vain—that this nation, under God, shall have a new birth of freedom, and that government of the people, by the people, for the people, shall not perish from the earth."
Things to do in Charleston South Carolina:
Go to the historic homes
go to the battery
go the fort Sumter
go see rainbow row
go on the ferry
go on the dinner cruise
go to the SC aquarium
go to waterfront park (there is a pineapple fountain btw might be an interesting point of view)
go see where the historic battles were fought
see the governors house
see Darrius Rucker's house
go to some of the historic plantations
and a must see and do is go to the market
I think you are missing a dash thing in between the words "mid" and "May".