Cognitive Retraining: Cognitive retraining is a set of techniques designed to improve cognitive functions like attention, memory, planning, and problem-solving. Since the question is focused on improving attention and memory, this is the correct choice.
Social Skills Training: Social skills training focuses on enhancing social interaction and communication skills, and it does not specifically address attention and memory deficits.
Vocational Training: Vocational training aims to enhance skills that are required for a specific job. This is not what is needed in the given scenario.
Occupational Therapy: Occupational therapy is aimed to help people with activities of daily living, and although it does help with cognitive functions, it is not specific to attention and memory.