Choose the correct answer A, B, C or D for each gap in the passage

          Homelessness is a problem in many big cities in the world. It occurs when a part of the population does not have any (28) ______ place to call home. Hundreds of millions of people in the world spend at least some time of the year homeless. This is an issue that the authorities are trying to (29) ______. However, there are (30) ______ things that each person can do to help those people. One of the things that you can do to help the homeless is to volunteer your time. If you have a lot of free time, you might go on an extended trip to help (31) ______ homes or improve an impoverished area. Even with just a few hours a week, it is possible to make an impact in your own city. You can also sign up to help at a (32) ______ soup kitchen: most cities have a mission of some kind serving food to the homeless and offering temporary shelter

It occurs when a part of the population does not have any (28) ______ place to call home.