Final answer:
The sentence should be corrected by replacing the colon with a semicolon.
Step-by-step explanation:
The change that should be made to correct the sentence is to replace the colon with a semicolon. The semicolon is used to connect two closely related independent clauses without the use of a coordinating conjunction, while a colon is used to introduce a list, explanation, or example.
Learn more about Punctuation in English sentences