What Is an Adaptational Explanation for the Very Quick Responses

What is an adaptational explanation for the very quick responses of parents in preindustrial societies?

A) There are more threats to an infant's survival in preindustrial societies, so it is beneficial to respond to their needs immediately.
B) Mothers in preindustrial societies do not work outside the home, so it is easier for them to respond quickly to babies' cries.
C) Western mothers see quick responses as coddling and prefer to raise a self-reliant, independent child.
D) Fathers and elders in preindustrial societies expect babies to be kept quiet and under control at all times.