We are given:
[tex]p= \frac{8}{v} [/tex]
and we are to find the value of v when p = 4. Using this value in above equation, we can write:
[tex]4= \frac{8}{v} \\ \\
4v=8 \\ \\
v= \frac{8}{4} \\ \\
v=2 [/tex]
So, for p=4 the value of v will be 2.
Thus option C is the correct answer