Which sentence correctly uses a semicolon or colon?

✓ Correct Answer: Option D

Option D correctly uses a semicolon to separate two independent clauses that are closely related, especially when the second clause clarifies or explains the first, often with a conjunctive adverb like 'for example.' Options A and B have incorrect colon usage, and option C incorrectly uses a semicolon to introduce a list without an independent clause preceding it.