In each of the following questions, a sentence is given with two blanks. Choose the combination of words that best fits into the blanks, rendering the sentence grammatically correct and contextually meaningful.  The rapid and often unmanaged gentrification of historical neighbourhoods often results in a paradoxical outcome; while it brings much-needed capital investment and infrastructural development to neglected areas, it simultaneously causes the systematic ______ of long-term, low-income residents, thereby eroding the very cultural ______ that made the area attractive initially.