Which Statement Best Summarizes the Effects of Parent-Child Attachments on Later

Which statement best summarizes the effects of parent-child attachments on later development?

A) Insecurely attached infants have life-long emotional problems,even if the attachment style improves after infancy.
B) A secure relationship with one's father cannot compensate for an insecure mother-child attachment relationship.
C) A secure attachment may become insecure as a result of major stresses in the family,such as divorce or a mother returning to work.
D) An infant who is securely attached to its mother at age one appears to make that child "invulnerable to later socioemotional" difficulties.