Among the Assertions by Attachment Theorists About the Existence of the Attachment

Among the assertions by attachment theorists about the existence of the attachment styles and cultural significance, which of the following is best supported by research?

A) A child who is securely attached at one age will remain that way throughout life.
B) Forming attachment relationships in infancy is a universal human tendency.
C) The internal working model based on an infant's attachment with his or her mother is the only template for further social development.
D) Avoidant attachment styles lead to a greater likelihood that a child will develop behaviour problems.