To rotate a point \((x, y)\) clockwise about the origin by 90 degrees, you can use the transformation:
\[ (x, y) \to (y, -x) \]
For the point \((-4, -6)\):
- Identify \(x = -4\) and \(y = -6\).
- Apply the transformation: \[ (x, y) \to (y, -x) \Rightarrow (-6, -(-4)) = (-6, 4) \]
Thus, the new point after rotating \((-4, -6)\) clockwise about the origin by 90 degrees is \((-6, 4)\).
So, the correct response is \((-6, 4)\).