The question below comprises four scattered segments of a paragraph. Identify from among the four choices the sequences that correctly assemble the segments and complete the paragraph.

1. The profession helps to encourage development and facilitate recovery.
2. Physiotherapists help people affected by injury, illness or disability through movement and exercise, manual therapy, education and advice. 
3. Thus, it enables people to stay in work while helping them to remain independent for as long as possible.
4. They maintain health for people of all ages, helping patients to manage pain and prevent disease.