Option C is the correct answer.
[tex]f(x)=x-3 \\ \\
g(x)= x^{2}[/tex]
First we have to find g(4) and then use that value in f(g(4)) to find the value of the expression as shown below:
[tex]g(4)=(4)^{2} \\ \\
g(4)=16 \\ \\
f(g(4))=f(16) \\ \\
f(g(4))=16-3 \\ \\
f(g(4))=13 [/tex]
