Correct Option (c)
The passage explicitly states that values such as justice, love, and honour are "valid everywhere" but are "variously moulded and often differently handled" in foreign lands. It highlights that travel enables an individual to discern "what is parochial and what is universal" in their choices and understanding of these values. Therefore, meeting other people while traveling helps differentiate between local (parochial) values and universal values.
Incorrect Options:
The passage does not discuss the differentiation between imagination and understanding. Its central theme is the cultural expression and universal applicability of values, not cognitive processes.
The text does not focus on distinguishing between communities and nationalities. While travel involves encountering different groups, the core learning emphasized is about the nature of values rather than geopolitical or social classifications.
The passage does not address the identification of friends and foes. Its emphasis is on understanding the nuances of human values across cultures, promoting ease among fellows, rather than discerning amicable or hostile relationships.