In the Parable of the Good Samaritan (Luke 10:25-37), beyond the call to compassion, what does Jesus subtly challenge concerning the traditional understanding of 'neighbor'?

A He redefines 'neighbor' as someone of the same religious background. B He limits the responsibility of 'neighbor' to those in immediate proximity. C He expands the definition of 'neighbor' to include anyone in need, regardless of social or ethnic boundaries. D He emphasizes the importance of prioritizing the needs of one's family over strangers.