Answer:
B- They Separate the Sister Chromatids
Step-by-step explanation:
During cell division, microtubules form the spindle forms at the equator of a dividing cell. Thereon, duplicated chromosomes (sister chromatids which are not yet apart) are arranged on the equator plate. The spindle fibers then pull apart each and allow the movement of separated chromatids towards each pole. This process takes place both in mitosis and meiosis.