A colon is mostly used to show that you are going to make a list of things after the comma. So, having that in mind, the correct answer is the first option - I edited the article and found: comma splices, sentence fragments, and misplaced modifiers.
You listed three things here, therefore you have to put a colon. If you are going to mention only one thing, like in the other examples, a colon is not needed.
Answer:
The Exposition is the introduction.
Explantaion:
It is the part of the work that introduces the characters, setting, and basic situation. Rising Action is the part of the plot that begins to occur as soon as the conflict is introduced. The rising action adds complications to the conflict and increases reader interest.
Answer:
Aristophanes of Byzantium
Explanation:
I’m so happy that you have
