Correct option is B
Supplementary tree-crop interactions occur when the outputs of the tree and crop are independent of each other. In this type of interaction, both the tree and the crop grow and yield separately without negatively influencing each other. This is different from synergistic interactions where the outputs are interdependent and complementary.
Supplementary interactions mean the outputs from the tree and crop are independent, and they do not affect each other's growth or yield.
Complementary interactions occur when the tree and crop support each other in growth, enhancing the productivity of both.
Competition occurs when the tree and crop compete for the same resources, which can reduce productivity.
Synergistic interactions occur when the presence of the tree enhances the crop's growth, or vice versa.