From an Evolutionary Perspective, an Extended Relationship Between a Man

From an evolutionary perspective, an extended relationship between a man and a woman increased male certainty that her baby was actually his offspring, which

A) motivated him to care and provide for mother and child.
B) ensured consistent sexual activity, which increased chances of survival.
C) proved to the tribal elders that the couple was committed to child rearing.
D) decreased male competition for mates among tribal groups.