Final answer:
Biographers must engage readers with fresh characters and riveting details. Characterization and engaging language are important in achieving this in biographies.
Step-by-step explanation:
Biographers must engage readers with fresh characters and riveting details. Characterization is an important aspect in biographies as it helps to develop characters through actions, descriptions, and dialogue, making them more relatable and vivid to the readers. Engaging language, such as sentence structure and word choices, also plays a crucial role in capturing readers' attention and providing clear and compelling information.