The student's research question lacks focus as it uses a broad and vague analysis. The student is advised to use a question tag that allows for more in-depth analysis, such as "To what extent" or "What is the effect". However, the student does discuss a relevant environmental issue (the pollution of soils in Germany) and connects it to the global issue of heavy metal pollution in soils derived from vehicles. The student should provide a more detailed explanation of the connection between the local issue faced by Germany and the global environmental issue of soil contamination by heavy metals.
