Final answer:
Tanya has a difficult temperament as per Thomas and Chess, characterized by negative emotions and challenges in adapting to changes.
Step-by-step explanation:
According to Thomas and Chess, Tanya exhibits characteristics of a difficult temperament. Children with difficult temperaments typically display negative emotions, have trouble adapting to new situations or changes, and encounter difficulties in regulating their emotions. This type of temperament poses more challenges for parents and caregivers, as these children can exhibit fussiness, frequent crying, and resistance to routines, similar to the behaviors described for Tanya.