Final answer:
A chronological structure is most suitable for a biographical report, allowing a natural progression along the person's life events.
Step-by-step explanation:
The most suitable text structure for a biographical report about a person's life is chronological order. This structure allows the story to be told by following the sequence of events as they happened over time. It is often used in narratives to help build tension and maintain readers' engagement by leading up to a climax. A chronological approach makes it easier to follow the subject's life from birth to significant milestones and to the end, providing a natural progression and comprehensive view of the person's life story.
Problem-Solution, Cause and Effect, and Compare and Contrast are other text structures, but they are more suited to reports that analyze events, explore reasons and outcomes, or discuss similarities and differences between concepts, rather than detailing someone's life story.