To simplify the expression \( 3 - (4x - 5) + 6 \), we start by distributing the negative sign:
\[ 3 - 4x + 5 + 6 \]
Next, we combine the constant terms \(3\), \(5\), and \(6\):
\[ 3 + 5 + 6 = 14 \]
So the expression becomes:
\[ -4x + 14 \]
Thus, the simplified expression is:
\[ \boxed{-4x + 14} \]
The correct response is \( -4x + 14 \) (negative 4 x plus 14).