To rotate a point \((x, y)\) clockwise 90 degrees about the origin, the coordinates transform according to the formula:
\[ (x, y) \rightarrow (y, -x) \]
For the point \((-4, -6)\):
- Identify \(x\) and \(y\): \(x = -4\) and \(y = -6\).
- Apply the rotation formula:
\[ (-4, -6) \rightarrow (-6, 4) \]
Thus, the new point after rotating \((-4, -6)\) clockwise 90 degrees about the origin is \((-6, 4)\).
So the correct answer is \((-6, 4)\).