Final answer:
The most likely time in the school routine when children with disabilities become frustrated is reading class.
Step-by-step explanation:
The time in the school routine when children with disabilities are most likely to become frustrated is d. Reading class.
Children with disabilities may struggle with reading due to difficulties in processing information, focusing, and understanding the material. These challenges can lead to frustration and feelings of inadequacy. Providing appropriate accommodations and support, such as personalized instruction, assistive technology, and extra time for assignments and exams, can help mitigate frustration and promote success.