That information is completely unnecessary.

He thinks that war is a necessary evil.

She was devastated by sadness and cried her eyes out all night.

He used every possible means to make the project successful.

He is devoting himself to his work.

I did my best for the exam.

He has difficulty eating due to dysphagia.

He overcame the obstacles and achieved his goal.

We provide a special education program for handicapped children.

His son has a developmental disability, but he is doing his best at a special needs school.