Which stage of cell division is best for studying the morphology of chromosomes?

Telophase shows the following key events:
$1.$ Chromosomes cluster at opposite spindle poles
$2.$ Spindle fibres attach to kinetochores of chromosomes
$3.$ Nuclear envelope assembles around the chromosome clusters.

In which of the following stages do chromosomes align at the equatorial plate?

In which phase of cell division do the chromosomes split and move towards the poles?

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.

The condensation of chromosomes and the appearance of asters occur during the ...... phase.