Which of the Following Is the Best Example of Contingent

Which of the following is the best example of contingent responsiveness?

A) Nine-month-old Isabella avoids her mother's eyes and seems drowsy, so her mother ceases their game of peek-a-boo and allows Isabella to go to sleep.
B) The Svenson family's plan for caring for their infant hinges on care being provided by a member of the family so that the child is never left with strangers.
C) Four-year-old Andrew asks to have his training wheels removed, and his father complies.
D) Ralph and Rhonda believe that responding too quickly will spoil their child.