Juanita typed a long message to her professor asking for an extension on her paper's due date, but before she could hit send the battery on her laptop died and she lost the message. This is an example of a(n):.

Which choice is a major detail from paragraph two? a) the great wall is a large network of several walls and towers. b) the great wall looks like a long wall snaking its way across china. c) the great wall was constructed over hundreds of years beginning in 221 b.c. d) the great wall construction encouraged several independent kingdoms to unite.