Answer:
Option C is false.
Explanation:
The correct answer is:
C. Polynomials are closed under division. When you divide polynomials, the result will always be a polynomial.
This is false because sometimes when we divide polynomials, one polynomial does not gets completely or evenly divided by the other.
In such cases, we get a remainder which is not a monomial as the variable has a negative power. This means the quotient is not a polynomial.
We can show this by example : suppose we want to divide
by

=>

=>
=>

This is not a polynomial. So the closure property does not hold true for division of polynomials.