Step 1: Examining Aristotle's Corpus.
Aristotle, a prominent Greek philosopher, produced a vast body of work. His notable treatises include "Politics," "Metaphysics," and "Organon." It is crucial to note that "Apology" is not attributed to Aristotle; it is a Platonic dialogue detailing Socrates' defense during his trial.
Step 2: Evaluating the Provided Choices.
- 1. Politics: A treatise by Aristotle concerning political theory and administration. - 2. Metaphysics: Another Aristotelian work exploring the fundamental aspects of existence. - 3. Organon: A compilation of Aristotle's texts on logical principles. - 4. Apology: This option is erroneous. "Apology" was authored by Plato, not Aristotle.
Step 3: Determining the Correct Identification. The incorrect option is 4. Apology.
Final Answer: \[ \boxed{\text{The incorrect option is 4. Apology.}} \]