Final answer:
The correct answer is 'Smiths'. In this case, 'Smiths' is being used as a plural noun to refer to the last name of a family. Option B.
Step-by-step explanation:
The correct answer is B) Smiths.
In this case, 'Smiths' is being used as a plural noun to refer to the last name of a family. Since the possessive form of a plural noun ending in 's' is formed by adding an apostrophe only, the correct form is 'Smiths'.
For example, in the sentence 'We are going to the Smiths' house for dinner,' the 'Smiths' indicates that we are going to the house of the Smith family.
Learn more about Possessive Nouns