<h2>The "option d: 
+ 13x + 12" is a trinomial with a constant term.</h2>
Step-by-step explanation:
To check options:
a: x + 4y
Here, the coefficient of x = 1 and the coefficient of y = 4
b:
Here, the coefficient of = 1
c: + 3
+ 2y
Here, the coefficient of = 1, the coefficient of
= 4 and the coefficient of y = 2
d: + 13x + 12
Here, the coefficient of = 1, the coefficient of x = 13 and
constant term = 12
Thus, the "option d) + 13x + 12" is a trinomial with a constant term.