Step 1: Statement Analysis. The assertion "Man is a ferocious animal" reflects a pessimistic perspective on human nature, attributed to: - Hobbes, who posited that in a natural state devoid of governance, individuals would prioritize self-interest, resulting in conflict and aggression. - Hobbes' perspective is detailed in his work *Leviathan*, wherein he argues that a powerful sovereign entity is essential for maintaining peace and safety.
Step 2: Identification of the Theorist. The correct identification is 3. Hobbes.
Final Determination: \[ \boxed{\text{The correct answer is 3. Hobbes.}} \]