1. **State the problem:** We need to identify the type of error in the argument: "All superheroes wear capes. The Masked Gomer wears a cape. Hence, The Masked Gomer is a superhero." 2. **Analyze the argument:** The argument assumes that because all superheroes wear capes, anyone who wears a cape must be a superhero. 3. **Identify the logical form:** The argument uses the statement "All superheroes wear capes" (If superhero, then wears cape) and concludes "If wears cape, then superhero." This is the fallacy of affirming the consequent. 4. **Explain the error:** The error is in reasoning. Just because all superheroes wear capes does not mean that everyone who wears a cape is a superhero. The premise only states a necessary condition, not a sufficient one. 5. **Conclusion:** The error is an **error in reasoning**, not a false assumption or circular reasoning. **Final answer:** The argument contains an **error in reasoning** because it incorrectly assumes the converse of the original statement is true.