Answer:
I believe it is the last choice.
Step-by-step explanation:
There is no shape, could you give a picture or something of the shape?
Answer:
c = 4
Step-by-step explanation:
In a perfect square trinomial, the following relationship is true:

In order for the given expression to be a perfect square trinomial:

Solving for 'c':

Therefore, c must be equal to 4.