Respuesta :

Porshia
Answer is A. 12c
A monomial only consists of one term (12c), 
Binomials consist of two terms (c^2 - 16)
Trinomials consist of three terms (c^2 + c + 6)

An easy way of remembering which is which is to look at the prefixes. 
Mono= 1
Bi= 2
Tri= 3