Form the plural form of the noun: 

wolf 

Correct alternative is C.

The plural shape of a noun finishing with -f or -fe is shaped with the aid of using removing -f or -fe and changing the equal with -ves.

 The plural shape of the phrase wolf is: wolves.

 Option C is the ideal answer. The phrases wolfs, wolfes and wolfoes bring the incorrect spellings. 

Hence, Options A, B and D are incorrect.