Step 1: Understanding the Concept:
Chronological lifespan developmental stages from birth through maturity.
Step 2: Detailed Explanation:
Arranging human lifespan stages in chronological ascending order of age:
1. B. Infancy: Birth to 2 years.
2. D. Preschool (Early Childhood): 2 to 6 years.
3. A. Middle Childhood: 6 to 12 years (school-age).
4. C. Adolescence: 12 to 18--20 years (puberty transition).
5. E. Adulthood: 20+ years onwards.
Ascending sequence: B $\rightarrow$ D $\rightarrow$ A $\rightarrow$ C $\rightarrow$ E.
Step 3: Final Answer:
Therefore, the ascending order is B, D, A, C, E, matching option (B).