Under a light microscope, a stained cell shows chromosomes lined up along the middle. what will happen next?
spindles will form and centrioles will move to opposite poles.
a nuclear membrane will form around each set of chromosomes.
chromosomes will separate and move to opposite poles

Option A, Spindles will form and centrioles will move to opposite poles.

Explanation:

The stage of cell division being described in this instance in the "Metaphase". In this phase of cell division, all the chromosomes are captured by the spindle fiber and arranged linearly along the middle of the cell.

This is the stage just before the cell division, where chromosome align themselves along the meta phase (a fictional center line) and then the two kinetochores of each chromosome get attached to the microtubules on the two opposite spindle poles.

Hence, option A is correct

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.