What is the primary purpose of using a semi-colon in writing?

The primary purpose of using a semi-colon in writing is to connect related independent clauses. A semi-colon functions as a strong punctuation mark that links two independent clauses that are thematically related, allowing for a smoother flow of ideas than a period would provide. This usage helps to clarify the relationship between the two clauses, indicating that they are closely connected in thought. By using a semi-colon instead of a conjunction, the writer can emphasize the relationship or contrast between the two statements while maintaining the clarity of separate thoughts.

In contrast, the other options address different punctuation functions: listing items is typically done with commas or a colon, possession is indicated with an apostrophe, and a period is used to end a sentence. Each of these serves a distinct purpose in writing that does not align with the specific function of the semi-colon.