The chromosomes cluster at opposite poles and their identity is lost as discrete elements during

$A$: The complete disintegration of the nuclear envelope marks the start of metaphase.
$R$: Chromosomes are distinct with two chromatids at this stage.

During cell division,the nuclear envelope reforms at which stage?

Choose the correct combination of options to select the correct statement for prophase:
$I.$ Chromosomal material condenses to form compact mitotic chromosomes.
$II.$ The assembly of mitotic spindle is initiated by the microtubules.
$III.$ Cells do not show organelles when viewed under the prophase.
$IV.$ The nucleolus or nucleoli degenerate completely.

Identify the given diagram.

Choose the correct option regarding the duplication of organelles during the cell cycle:
$(1)$ Mitochondria and centrioles duplicate during the $(G_0 / G_1 / G_2)$ phase of interphase.