Step 1: Introduction to Nicomachean Ethics.
Aristotle's Nicomachean Ethics examines the nature of happiness and virtue. Aristotle posits that happiness (eudaimonia) is the ultimate human objective, attainable through the cultivation of virtue and rational living.
Step 2: Evaluation of Options.
- 1. Happiness: This option is accurate. The central theme of Nicomachean Ethics is the pursuit of happiness, which Aristotle defines as living virtuously and rationally. - 2. Pleasure: While pleasure is addressed, it is not the primary focus. Aristotle differentiates between superior (intellectual) and inferior (physical) pleasures, prioritizing the former.- 3. Duty: Aristotle's emphasis is not on duty as understood by some contemporary philosophers (e.g., Kant). His focus lies more on virtue and character development.- 4. Good: Although Aristotle discusses the "good," it is in relation to happiness and virtue, rendering happiness the paramount concept.
Step 3: Determination. The correct selection is 1. Happiness.
Final Decision: \[ \boxed{\text{The correct answer is 1. Happiness.}} \]