Final answer:
A proper fraction is a fraction where the numerator is smaller than the denominator. In this case, 15/22 is a proper fraction.
Step-by-step explanation:
A proper fraction is a fraction where the numerator is smaller than the denominator. In option A, 15/22, the numerator (15) is smaller than the denominator (22), making it a proper fraction. Options B, C, and D do not represent proper fractions. Option B is a whole number, not a fraction. Option C is a percent symbol, not a fraction. Option D is also a whole number. Therefore, the correct answer is A.
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