Refer to the illustration above.
During which stage do the centromeres divide?

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

a symbiotic relationship with the mitochondria

i think that it is c, d, and e, hope this