[Solved] What is a distinctive feature of Celtic military activity? A)Warriors fought naked and took the heads of enemies. B)Warriors fought with special armor. C)Warriors used military bands to set the tempo for marching, and to keep up morale. D)Warriors engaged in symbolic warfare, which obviated injuries. E)Warriors fought only as a last resort after diplomacy failed. Essential Information: Essential information refers to the critical and necessary data or facts that are required to understand a topic, make a decision, or complete a task. Organize: To arrange or put in order; to structure systematically. Formal Tone: A style of communication that is polite, restrained, and follows conventional standards and practices. First-Person Pronouns: Pronouns that refer to the speaker or writer ('I', 'me', 'my', 'mine', 'we', 'us', 'our', 'ours').