Determine the domain of (g ∘ f)(x) if f (x) = x2 + 2x − 4 and g of x is equal to 1 over the quantity x plus 1 end quantity period

{x ∈ ℝ}
{x ∈ ℝ| x ≠ −1}
{x ∈ ℝ| x ≠ −3, 1}
{x ∈ ℝ| x ≠ −3, −1, 1}