Which one of the following is the augmented matrix in row-echelon form for the system below? 
Definitions:
Social Structure
The ordered and persisting relationships among the positions in a social system.
Life Stage
A period in an individual's life characterized by specific developmental tasks, roles, or expectations, such as childhood, adolescence, adulthood, and old age.
Socialization Perspectives
Theories and viewpoints on how individuals learn to become functioning members of society through internalizing norms, values, and roles.
Outcome
The result or effect of an action, decision, or situation.
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