Normative age-graded influences, normative history-graded influences, and nonnormative life events are all ways in which development can be classified as

contextual.

Explanation:

Developmental contextualism may be defined as the perspective which views development of human as an inextricably as well as reciprocally that is linked to the multiple contexts of the individuals' lives. It is the basic process of a human development that involves the changing relations between the developing person and the changing, multilevel context of his or hers.

Normative age-graded influences are those influences of biological as well as  environmental factors which have a strong correlation with the chronological age of a person. And normative history-graded influences are associated with the correlation with the historical time. While Non-normative life events are those events that occur suddenly and unexpectedly such as illness, natural disaster, somebody's death, etc.

All of these are classified as the ways of the contexual development of a person's life that are related to them.

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