The given word pair is 'Race : Track'. Here, 'Track' is the place where the activity 'Race' takes place. We need to find a similar relationship in the given options.
Athletics : Stadium - 'Stadium' is the place where 'Athletics' takes place. This relationship is similar to 'Race : Track'.
Cart : Wheel - A 'wheel' is a part of a 'cart', which is not a similar type of relationship as required.
Wrestling : Court - 'Court' is not typically associated with where 'Wrestling' takes place; usually, wrestling takes place in a ring.
Exercise : Course - 'Course' does not specifically indicate where an 'Exercise' is performed.
Thus, the correct answer is Athletics : Stadium, where 'Stadium' is the place where 'Athletics' takes place, paralleling the 'Race : Track' relationship.