Kara takes her one-year-old son, Delaney, to visit a daycare center where she plans to enroll him. Delaney appears very anxious and is unwilling to explore the playroom, even though Kara is close by. When his mom leaves the room to fill out some forms, Delaney becomes extremely upset. When Kara returns, he clings to her leg but does not calm down and continues to sob. This is the type of interaction you might observe between a child and a parent who:
a. share a secure attachment relationship.
b. share an avoidant attachment relationship.
c. have not yet developed an attachment relationship.
d. share an anxious-ambivalent attachment relationship.

(D) share an anxious-ambivalent attachment relationship.

Explanation:

When a child feels protected, seen, and regularly soothed by his or her parent, they may develop a secure attachment to that parent. However, the child is more likely to experience an unstable ambivalent pattern of attachment when a parent is present and at times adjusted, and is disrespectful or disruptive to others.

A kid with an anxious-ambivalent attachment profile will usually interact less and is always afraid of strangers even if the parent is present. The child also gets extremely upset whenever the caregiver moves away. The major factor in children who form an ambivalent / anxious attachment pattern is uneven attunement in their connection with their custodial parent.

there is an explationation of this on a site called crash   course world history 1