Question

what happens to the nuclear envelope during telophase of mitosis? it disappears it reforms around each set of chromosomes it attaches to the spindle fibers it forms a new cell wall

Explanation:

During telophase of mitosis, the nuclear envelope reforms around each set of separated chromosomes. This is part of the process of re - establishing the nucleus in the newly forming daughter cells. The disappearance of the nuclear envelope occurs in prophase, attachment to spindle fibers is not a function of the nuclear envelope during telophase, and the formation of a new cell wall is related to cytokinesis in plant cells and not the nuclear envelope's function in telophase.

Answer:

It reforms around each set of chromosomes