问题: Whymustagingbeconsideredinthecontextofsociety?
A: ecausethesocietyismorecomplexthanbiologicalenvironment.
B:ecausethesocietyischangingfasterthanthephysicalenvironment.
C:ecausethesocietyplaysamajorroleintheagingprocess.
D:ecauseagingisalsomuchaffectedbyenvironmentalfactors.
