Answer:
The second sentence adheres best to AP Style and contains no errors:
“Star Wars: Episode III - Revenge of the Sith” is considered by a large majority of fans to be the worst film in the long-running series.
Step-by-step explanation:
The issues with the other sentences:
- No punctuation around the title
- Subject-verb agreement error: "are considered" should be "is considered"
- Wrong article use: "an large" should be "a large"
- Nouns do not agree: "worst film" should be "worst films"
So in summary, the second sentence:
“Star Wars: Episode III - Revenge of the Sith” is considered by a large majority of fans to be the worst film in the long-running series.
Properly uses punctuation around the title, has correct subject-verb agreement, correct article use, and nouns that agree in number. It follows AP Style's recommendation to place film, book and song titles in quotation marks.