Which sentence reflects the correct usage of a plural possessive noun?
a. Olympic snowboarders determination drives them through the rigorous' training required to remain competitive in the sport.
b. Olympic snowboarders's determination drives them through the rigorous training required to remain competitive in the sport.
c. Olympic snowboarders' determination drives them through the rigorous training required to remain competitive in the sport.
d. Olympic snowboarders determination drives them through the rigorous's training required to remain competitive in the sport.
C. Olympic snowboarders' determination drives them through the rigorous training required to remain competitive in the sport.
The general rule for the plural possessive, is that if the plural noun shows that its plural by adding either 's' or 'es' then you just had an apostrophe after the s. So C is correct.
