To perform a 90° counterclockwise rotation about the origin, you can use the following transformation on the coordinates (x, y):
\[ (x, y) \rightarrow (-y, x) \]
For the point D (-4, -8):
- Identify the coordinates: \(x = -4\) and \(y = -8\).
- Apply the transformation:
\[ D' = (-(-8), -4) = (8, -4) \]
Thus, the coordinates of D' after a 90° counterclockwise rotation are (8, -4).
Therefore, the correct response is:
(8, -4)