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

A The importance of religious piety and adherence to Jewish law. B The expectation of reciprocal kindness from those in need. C The active demonstration of compassion and mercy towards anyone in need, regardless of their background. D The careful calculation of personal risk and potential reward before offering assistance.