Answer:
b. lifelong.
Explanation:
The idea that no age period dominates development highlights the life-span perspective that development is lifelong.
Throughout the history of humans, from the stone age, the dark ages, the middle ages down to the information age, there has been significant developments. From development of tools in the stone age, architectural developments and arts that characterized the middle age down to internet technology of the 21st century. Human development is lifelong.
