Answer:
b) infant-directed speech
Step-by-step explanation:
In psychology, the term "infant-directed speech" refers to a type of speech register that is made by using simpler sentences and a slower rate, and constant repetition of words. One other main characteristic of this speech (among different cultures) is the high-pitched tone of it. This speech, as its name suggests is directed to infants.
In this example, Ursula speaks to her infant in short high-pitched sentences with exaggerated expression, clear pronunciation and pauses. We can see that the speech Ursula is using has the characteristics of the infant-directed speech.