Question

in which step of the diagram is the provirus formed?
step a
step b
step e
step f

Explanation:

The problem is about identifying the step in a diagram (likely related to cell division or a biological process) where the phragmoplast (assuming "prophus" is a typo for phragmoplast, involved in plant cell cytokinesis) is formed. In plant cell division, the phragmoplast forms during late telophase/early cytokinesis, which corresponds to a step where the cell is preparing to form the cell plate. Looking at typical cell division diagrams, Step A (or the relevant step with the phragmoplast structure) would be where it's formed. Assuming the options and diagram context, the correct step is Step A.

Answer:

Step A