Biology

The correct answer is: D.Telophase.

Explanation:

The nuclear membrane reforms around the daughter cell's nuclear material during telophase, the final stage of mitosis. In telophase:

1.The separated chromatids, now individual chromosomes, begin to de-condense into chromatin.

2.The nuclear envelope reforms around each set of chromosomes at the opposite poles of the cell, creating two distinct nuclei.

3.The spindle fibers also start to break down.