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Which of the following best explains why siblings (other than identical twins) are not genetically identical, despite sharing the same parents? maternal and paternal chromosomes/gene variants

Question
Which of the following best explains why siblings (other than identical twins) are not genetically identical, despite sharing the same parents? maternal and paternal chromosomes/gene variants
Each germ cell that formed them received a different, essentially random combination of
Siblings always have completely different parents biologically
Only the mother contributes DNA, and it varies randomly
Genetic material is not inherited from parents at all
Answer
Each germ cell that formed them received a different, essentially random combination of
Detailed Explanation
Because each germ cell takes one chromosome from each pair, potentially of either maternal or paternal origin, different germ cells (and thus different siblings) can inherit different combinations.
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