Mark the letter A B C or D to show the underlined part that needs correction, Mark the letter A; B; C; or D to show the underlined part that needs correction, Mark the letter A; B; C or D to show the underlined part that needs correction, Mark the letter A. B.C or D to show the underlined part that needs correction., Mark the letter A. B. C. or D to show the underlined part that needs correction., Mark the letter A.B.C. or D to show the underlined part that needs correction, Mark the letter A. B. C.or D to show the underlined part that needs correction.