Answer:
Rita displays the slow-to-warm-up temperament.
Explanation:
Babies who exhibit the slow-to-warm-up temperament, similar to Rita, are babies who exhibit some indifference to outside stimuli, which is not necessarily worrying. These are children who do not usually attach much importance to the outside world, which they perceive as predictable and unsurprising (at least as more predictable and less surprising than it is for other children their age). On the other hand, their indifference to their surroundings does not mean they are satisfied, it is in fact an indicator of conformity. These babies refrain from interacting with caregivers they have never seen before, and show discomfort and restlessness in situations or people they do not know.