Final answer:
According to functionalists, one of the five functional requisites for societal survival is socializing youth, which helps maintain societal stability and order by instilling cultural norms and values.
Step-by-step explanation:
One of the five functional requisites that functionalists believe a society must meet to survive is d. Socializing youth. Functionalists see society as a system where all parts work together to maintain stability and order, similar to the organs of a human body. Societies need to socialize youth to instill cultural norms and values that support the fluid operation of society. This process ensures that the youth are prepared to fulfill societal roles and contribute to the society's stability and continuity.