You should explain in detail how and why the disability affects development because disability affects children's development in different ways. That can be physically and sensory, social, emotional and behavioural and learning or cognitive. There's too many disabilities and conditions to list so I did write in general terms or make examples of specific types of disability eg
Hearing impairment affects language and communication in that …. etc.
ADHD affects behaviour and social development in that….etc.
Emotional and social development are also affected by a condition like Autism - Asperger's syndrome.
Dyslexia is a condition that affects learning literacy, dyscalculia affect learning numeracy skills.
Physical development may be affected if the child or young person uses a wheelchair, they may not have good mobility. Dyspraxia also affects body movements and coordination.
Intellectual development may be affected by a learning difficulty eg. a child with Downs syndrome
You might be able to see cyp 3.7 where they say what's 'the impact of disability instead of 'affect on disability.. get the book
it will help