[tex]y=\dfrac{8x+3}{4}=\dfrac{8x}{4}+\dfrac{3}{4}=2x+\dfrac{3}{4}[/tex]
It's a linear function y = mx + b. The domain of linear function is the set of all real numbers.
We have no objections to the value of x. x can be any number.
Therefore your answer is:
a) All real numbers.
