Question

Which of the following is the correct possessive form of the bolded word?

Answer 1

The writer is Dickens so the S belong to the surname.  There are 2 possible forms to express  a possesive case here. 

The most common one would be option D Dickens’. A general rule might be applied where because the noun ends in S we can only add the apostrophe, However, a second possibility is also allowed, It is option B Dickens’s. This option might depend on pronunciation that is why it is not so commonly used. 

Answer 2

Dickens's I am 100% positive that this is the answer hope I helped u