The correct option is D 43
The fraction whose numerator is less than the denominator is called a proper fraction.
13:Numerator < Denominator
Hence, it is a Proper Fraction.
34:Numerator < Denominator
Hence, it is a Proper Fraction.
78:Numerator < Denominator
Hence, it is a Proper Fraction.
43:Numerator < Denominator
Hence, it is a not a Proper Fraction.
∴ Option (d) is correct.