Can someone answer this i need this by tomorrow morning

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

What must be true for natural selection to heppen

Talking listening and reacting non verbally are all part of communicating