The correct option is A Monomial
Monomial is a polynomial with one term.
Let us take 5xy as one monomial and 2ab as another monomial.
Now, let's multiply these two monomials:
5xy×2ab=(5×2)×(xy×ab)
=10×(xyab)
=10xyab
Product of 5xy and 2ab is 10xyab, i.e. a monomial.
Hence, multiplication of two monomials is also a monomial. Therefore, option (a.) is the correct answer.