4.B Results of ALMO-TDA calculations for solvated OLU -and pHBDI - Figure shows the comparison of ALMO-TDA results with varying active-space definitions for the water-solvated OLU -and pHBDI - chromophores (100 frames for each; each frame contains 30 water molecules) when plotted against the full-system TDA results. Here the ALMO-EDA calculations with an intuitive partition of the system, with the chromophore being one fragment and all 30 water molecules as the other. Since the ALMO-TDA method is currently limited to systems without inter-fragment linear dependency among the basis functions, a smaller basis set without diffuse functions, 6-31G(d,p), is used for the full-system and ALMO-TDA calculations.