Based on the situation stated above, the best thing to do next is:
c. act and start visiting the child
In this type of program based on the scenario, the group is ready to visit the children in the hospital. So I guess it is proper to start option c immediately. After that, they can reflect on the benefits the project will have based on the gathered information from their experiences and then that's the time to explore options for other needs in the hospital to make more successful related projects.