Which of the Following Is a Characteristic Reaction of an Infant

Which of the following is a characteristic reaction of an infant who scores high in the effortful control dimension of Mary Rothbart's model of temperament?

A) As William's mother hands him a new toy, it begins to play music. He throws the toy down and begins crying.
B) When Eva meets a puppy for the first time, it barks and Eva startles. Then she smiles and reaches for the puppy.
C) As Kihye learns to walk, she only takes steps when holding her parents' hands. If they let go, she sits down and begins to cry.
D) When Kamal's father attempts to engage in high stimulating play with him, he averts his gaze and sucks his thumb before resuming eye contact and smiling.