Answer:
The philosophy of sport is concerned with the conceptual analysis and interrogation of key ideas and issues of sports and related practices. At its most general level, it is concerned with articulating the nature and purposes of sport. The philosophy of sport not only gathers insights from the various fields of philosophy as they open up our appreciation of sports practices and institutions, but also generates substantive and comprehensive views of sport itself. The philosophy of sport is never fixed: its methods demand an inherently self-critical conception of intellectual activity; one that challenges its own preconceptions and guiding principles continuously both as to the nature and purposes of philosophy and of sports.
The answer is B. [Im]perceptible means [not] perceivable, and to perceive is to understand.
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