In the parable of the Good Samaritan (Luke 10:25-37), what crucial aspect of 'neighborly love' does Jesus emphasize that transcends mere proximity or shared identity?

A The importance of religious piety and strict adherence to Jewish law. B The expectation that only those of similar social standing should help each other. C The active demonstration of compassion and mercy towards anyone in need, regardless of their background. D The prioritization of helping family members and close friends over strangers.