Which would be an effective thesis statement for an informational essay about lowering stress in children?

Children should have the right to engage in unstructured play time.
Children are pretty stressed right now.
Children are overscheduled and stressed, but more free time for unstructured play would help reduce their stress.
Children are different all over the world, and they all have different things to do, including playing in unstructured ways.

C seems best to me. It mentions both the problem and a solution.

yes C is correct!

The effective thesis statement for an informational essay about lowering stress in children would be: "Children are overscheduled and stressed, but more free time for unstructured play would help reduce their stress."

An effective thesis statement for an informational essay about lowering stress in children is:

"Children are overscheduled and stressed, but incorporating more free time for unstructured play can help reduce their stress."

To come up with this thesis statement, start by identifying the main topic of the essay, which is lowering stress in children. Then, consider the key points you want to address in the essay, such as how children are currently overscheduled and stressed. Finally, propose a solution or approach that can be explored in the essay, which in this case is incorporating more free time for unstructured play. By combining these elements, you can form a strong thesis statement that clearly conveys the purpose and argument of your essay.