The student includes diagrams that are relevant to the chosen concept and topic, featuring a trade diagram illustrating the effect of the tariff on Russian imports and outlining the welfare effects of the tariff. However, the diagrams should have been labeled and accurate, and arrows showing how quantity changes should have been drawn. Additionally, the explanation accompanying the diagrams effectively makes their content and relevance clear to the reader, detailing the impact of the tariff on Russian imports, changes in quantity supplied and demanded, and the welfare effects of the tariff.