Respuesta :

We have the following:

[tex]\begin{gathered} f(x)=\frac{1}{x} \\ g(x)=\frac{x+1}{x} \end{gathered}[/tex]

now, (f(x) o g(x))

[tex]\mleft(f\: (x)\circ\: g(x)\mright)=\frac{1}{\frac{x+1}{x}}=\frac{x}{x+1}[/tex]

The answer is the second option

[tex]\frac{x}{x+1}[/tex]