Arrange the human life stages from earliest to latest. Treat \"babyhood\" as the earliest neonatal/early-baby phase followed by \"infancy\": (a) Infancy (b) Childhood (c) Adulthood (d) Babyhood (e) Adolescence.

Introduction / Context:
This is a developmental-sequence problem. The items include two early-life terms—\"babyhood\" and \"infancy\"—that are often used interchangeably in casual speech. For ordering purposes, we treat babyhood as the earliest neonatal/early-baby phase, followed by infancy, then the universally accepted stages thereafter.

Given Data / Assumptions:

• Babyhood (d) — earliest early-baby phase (assumed here for ordering).
• Infancy (a) — early childhood stage following babyhood.
• Childhood (b) — preadolescent years.
• Adolescence (e) — teenage, transitional to adulthood.
• Adulthood (c) — mature stage.

Concept / Approach:
Proceed from earliest dependency to mature independence: babyhood → infancy → childhood → adolescence → adulthood.

Step-by-Step Solution:
1) d (Babyhood).2) a (Infancy).3) b (Childhood).4) e (Adolescence).5) c (Adulthood).

Why Other Options Are Wrong:
They misorder adolescence/childhood or put adulthood before earlier stages, or place babyhood after later stages.

Final Answer:
d, a, b, e, c