Find the Specified Domain
-For $f(x)=x^{2}-1$ And $g(x)=2 x+3$ , What Is the Domain Of

Multiple Choice

Find the specified domain
-For $f(x) =x^{2}-1$ and $g(x) =2 x+3$ , what is the domain of $f \circ g$ ?

A) $[1, \infty)$
B) $(-1,1)$
C) $(-\infty, \infty)$
D) $[0, \infty)$