1. The problem is to match the shaded region in each Venn diagram with the correct set expression from the given list. 2. The expressions describe unions, intersections, complements, and their combinations for sets A and B. 3. For the first Venn diagram, the shading is the circle for B only (right circle B shaded). This corresponds to set B, so the answer is D. 4. For the second Venn diagram, the shading is again the circle for B only (right circle B shaded). This also corresponds to set B, so the answer is D. 5. For the third Venn diagram, the shading is the circle for A only (left circle A shaded). This corresponds to set A, so the answer is C. Final answers: 1. D 2. D 3. C