What is the term for a written account of a series of events making up a person's life?

The term that describes a written account of a series of events making up a person's life is typically understood to be "biography." A biography is a detailed description of a person's life, which includes not only basic facts like education, work, relationships, and death, but also the experience of those life events. It is written by someone other than the subject, providing an external perspective on the person's life.

While the other choices—memoir, autobiography, and reflection—relate to personal narratives, they have distinct meanings that differentiate them. A memoir focuses on specific experiences or themes within a person's life, an autobiography is the self-written account of one’s life, reflecting the person’s own perspective, and a reflection is an analysis of thoughts or feelings about past experiences rather than a chronological recounting of life events. Therefore, "biography" is the most accurate term for a comprehensive account of someone else’s life events.