Which of the following statements is a well-written thesis statement?

A."American cities are full of homeless people who do not have access to food, shelter, or restroom facilities."

B."It is a shame that there are so many homeless people in our country; something should be done to help them."

C."Humanitarian groups often try to assist homeless people by organizing food pantries and providing blankets and personal items to help the less fortunate of their community."

D."Urban homeless people should receive services such as regular food donations, public restrooms, and sleeping facilities because it would improve life for everyone living in the city."