Proper Fractions:
A proper fraction is a fraction where the numerator is less than the denominator. In other words, the value of a proper fraction is always less than 1.

Options:
(A) 4/5
(B) 5/4
(C) 1 1/2
(D) 9/2

Explanation:

(A) 4/5:
The numerator of the fraction is 4, and the denominator is 5. Since 4 is less than 5, this fraction is a proper fraction.

(B) 5/4:
The numerator of the fraction is 5, and the denominator is 4. Since 5 is greater than 4, this fraction is not a proper fraction.

(C) 1 1/2:
The fraction can be written as 3/2, which means the numerator is 3 and the denominator is 2. Since 3 is greater than 2, this fraction is not a proper fraction.

(D) 9/2:
The numerator of the fraction is 9, and the denominator is 2. Since 9 is greater than 2, this fraction is not a proper fraction.

Conclusion:
Out of the given options, only option (A) 4/5 is a proper fraction because the numerator (4) is less than the denominator (5).

A)4/5