How many homologous chromosome alignments are possible for independent assortment during meiosis?

The correct answer is two.

During meiosis, there are two rounds of the same phases. So, when the homologous chromosomes align during the first round of meiosis, they will again do so during the second round of meiosis. 

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.