Arrange the words given below in a meaningful sequence. 1. Adult 2. Child 3.…

Concept: The five human-development stages fall in a fixed chronological order based on age: infancy (newborn) comes first, followed by childhood, then boyhood/pre-teen years, then adolescence (teenage years), and finally adulthood — each stage denotes a strictly greater age than the one before it.

Application: Map each numbered word to its stage in this progression, in order of increasing age:

1. 3 = Infant -> the earliest stage (newborn).

2. 2 = Child -> comes after infancy.

3. 4 = Boy -> comes after childhood, before the teenage years.

4. 5 = Adolescent -> the teenage stage, before adulthood.

5. 1 = Adult -> the final, most mature stage.

Cross-check: Each stage above is strictly older than the one immediately before it (Infant < Child < Boy < Adolescent < Adult), and no stage is placed out of its age order.

Result: Arranging by increasing age gives the sequence 3, 2, 4, 5, 1, which is the meaningful sequence.