A. everybodys surprise
B. everybody’s surprise
C. every body’s surprise
D. everybodys’ surprise
B. everybody's surprise
Explanation: Possessive pronouns ending in ‘s’ take an apostrophe before the ‘s’: one’s; everyone’s; somebody’s, nobody else’s, etc.
Explanation: Possessive pronouns ending in ‘s’ take an apostrophe before the ‘s’: one’s; everyone’s; somebody’s, nobody else’s, etc.