What are special educational needs (SEN)?

Here's the solution to question 2a:

2a. Special educational needs (SEN) refer to learning difficulties or disabilities that make it harder for a child to learn than most children of the same age. Children with SEN may require additional or different support from what is typically provided in mainstream education to help them achieve their full potential. These needs can affect a child's ability to learn, communicate, socialize, or behave appropriately in school.