terms are things in polynomials seperated by plus signs (a minus sign is adding a negative, so like a-b=a+(-b))
monomial has 1 term
bionomial has 2 terms
trionomial has 3 terms
constant is just like -34 or 23, no variable
so
12xyz-45
12xyz+(-45)
2 terms
bionomial
C is answer
