Blockbuster science-fiction Series whose 'third' episode ended with a lightsaber fight on the volcanic planet Mustafar.

• A. Star Wars
• B. Star Trek
• C. Battlestar Galactica
• D. Doctor Who

Answer: (A)

This item tests recognizing a defining scene tied to a blockbuster sci-fi series and its third installment. The mustafar lava duel appears in Star Wars Episode III: Revenge of the Sith, the third movie in the Star Wars saga, where Obi-Wan Kenobi and Anakin Skywalker clash on the volcanic planet Mustafar. The fight ends with Obi-Wan’s victory and Anakin’s transformation into Darth Vader, a turning point that helps set up the rise of the Empire. That fiery, high-stakes lightsaber confrontation on Mustafar is iconic to Star Wars and doesn’t appear in the other franchises listed, which focus on different settings, conflicts, and weaponry. So Star Wars is the best fit.