Using a relative clause:People are suffering the illness in that

Using a relative clause:
People are suffering the illness in that area. They urgently need clean water, medicine and shelter to survive.
【正确答案】：People are suffering the illness in that area, who urgently need clean water, medicine and shelter to survive.
【题目解析】：当先行词为人时，关系代词可以用who或者that，在非限制性关系从句用who。