Which of the following structures is the most important contributor to the resonance hybrid formed when toluene undergoes para nitration? 
Definitions:
Self-Estrangement
A psychological state in which individuals feel disconnected or alienated from their own self or identity.
Assembly Line
An assembly line is a manufacturing process in which parts are added to a product in a sequential manner to create a finished product efficiently.
Work-Family Conflict
The tension arising from incompatible demands between work and family responsibilities, affecting individuals' stress levels and overall well-being.
Competitive Personalities
Personality traits that drive individuals to compete, often striving to outperform others in various situations.
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