Answer:
OD. Her brain and cognitive development may have been affected by the early trauma.
Step-by-step explanation:
When children are abused from an early age, then there is a higher chance of slow development in not only their cognitive and language development but also in their behavioral functioning. This means that the mental and physical abuse that they had suffered hugely affects their growth development and could even be detrimental to their overall development as they grow up.
In the case of Sara, the neglect and physical abuse that she's had suffered resulted in her current condition. The trauma that she faced could have become the deciding factor and even a blocking agent to her development, making her have lower IQ levels, demonstrating anxiety and other forms of 'underdevelopment' for her age.
Thus, the correct answer is option D.