The is primarily responsible for the identification, diagnosis, and design of the treatment plan and curriculum for children with communication, language, and speech disorders.

The correct answer is Speech-language pathologists.

Explanation:

There is a type of language disorder which treats people who have trouble understanding other people and expressing themselves.

This should be distinguished from speech disorder, which is when a person has difficulty producing sounds or speaking fluently.

Those who work to help people with these types of disorders are called Speech-language pathologists. They are professionals who are responsible for the identification, diagnosis, and design of the treatment plan and curriculum for children with communication, language, and speech disorders.

They usually form teams with other professionals such as therapists, teachers, audiologists, etc.

Together they try to solve the problems presented by this disorder that are usually semantic or grammatical problems, difficulty in social communication or problems to relate the sound of a word with its meaning, among others.