Step 1
An improper fraction is a fraction in which the numerator(top number) is greater than or equal to the denominator ( the bottom number)
Step 2
Conclude based on step 1
Hence
[tex]in\text{ }\frac{13}{12}\text{ the numerator 13 is bigger than the denominator 12, th}erefore\text{ it is an improper fraction}[/tex]Therefore the right answer is an improper fraction