Feminist critics’’have often pondered whether a postmodern language may be articulated that obviates the essentialist arrogance of much modernist and some feminist discourse and does not reduce feminism to silences or a purely negative and reactionary stance. This ideal may be actualized in a discourse that recognizes itself as historically situated, ’’ as motivated by values and, thus, political interests, and as a human practice without transcendent justification. The author Dorothy Allison meets these criteria by focusing on women who have been marginalized by totalizing forces and ideas, while simultaneously reminding the reader, through the wide range of women that she portrays and their culpability in her protagonists’’ predicaments, that unlike pure and transcendent heroes, women are real characters and morally complex. Allison insists that humans are burdened with the responsibility of fashioning their own stories, quotidian as they may be, and .while these will never offer the solace of transcendent justification, the constant negotiation between the word and the world avoids reticence on the one hand and the purely negative on the other. According to the passage, Crosby has made which of the following assumptions concerning historical means of demography
A．Migration is in most cases dictated by life course events as opposed to the economic factors that contribute to the development of cities. B．Population growth tends not to affect the availability of proxies for replacing emigrants from population centers. C．Sedimentary populations are more historically significant than nomadic or migratory ones. D．It is permissible to rely upon a single source of information in studying population movement patterns. E．Migration can be disregarded as a demographic pattern in historical contexts prior to the development of large cities.