Answer:It should be A
Step-by-step explanation: A trinomial is a polynomial that has three terms. A constant term of a polynomial is a term that doesn't contain variable only number.
A. Polynomial is a trinomial with a constant term 7.
B. Polynomial is a trinomial without a constant term.
C. Polynomial is a binomial (polynomial with two terms).
D. Polynomial is a monomial (polynomial with one term).
