It’s a free, downloadable set of complete exams provided by France Éducation International (the creators of the DELF). Each "exemple" includes:
In the DELF B2 exam, the written expression test usually requires you to write a formal or argumentative essay based on a specific prompt. Since I do not have the specific document or graph from your example, I have chosen a classic B2 topic: delf b2 exemple
100% yes – but only as part of a balanced preparation diet. 4.5 stars. ⭐⭐⭐⭐½ It’s a free, downloadable set of complete exams