Question

which diagram shows the phase right after anaphase?

Explanation:

After anaphase (where sister chromatids separate and move to opposite poles), the next phase is telophase. In telophase, nuclear envelopes start to reform around the separated sets of chromosomes (as seen in the bottom - left diagram with two sets of chromosomes each having a forming nuclear envelope), and the cell begins to physically divide (cytokinesis, which is also in progress in the bottom - left diagram as the cell membrane is indenting). The top - left diagram is likely metaphase (chromosomes aligned at the equator), the top - right is prophase (chromosomes condensing, nuclear envelope intact), and the bottom - right is after telophase (more advanced in cytokinesis).

Answer:

The bottom - left diagram.