Under the microscope, a cell shows formation of centrosomes and spindle microtubules.
what will happen next?
a) formation of an equatorial plate
b) separation of sister chromatids
c) replication of chromosomes

During metaphase, the chromosomes lie up in the middle. Microtubules of the spindle attach to the centromere. After this, during anaphase, the chromosome break at the centromere, separate, and move to the opposite poles. So, your answer is C.

Ecosystems service is a provisioning service