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Answer:d.)Line AEStep-by-step explanation:We have been given a diagram. We are asked to find the intersection of planes ADE and BEA.Upon looking at our given diagram, we can see that both planes intersect only at two points that are point A and E respectively.We can also see that the line AE is a common side of both planes,therefore, line AE is the intersection of planes ADE and BEA....