Answer:
The correct option is 
The polynomial is prime.
Step-by-step explanation:
we have to select the true statement for the equation

As, we know if  is a positive perfect square integer, then the trinomial can be factored over the rational numbers. Otherwise, we cannot factor
 is a positive perfect square integer, then the trinomial can be factored over the rational numbers. Otherwise, we cannot factor  over the rational numbers,
 over the rational numbers, 
so the trinomial is considered to be prime. 
Equation: 
a=1, b=8 and c=-6

which is not a perfect square integer.
Hence, the above trinomial can not be factored into lowe degree.
⇒ Given polynomial is prime.
hence, option 4 is correct.