“Acknowledge your and others’ range of linguistic differences as resources, and draw on those resources to develop rhetorical sensibility”
It means being aware of the fact that individuals express themselves differently through language, dialects, accents, and cultural influences. The statement advises embracing these distinctions as important qualities rather than seeing them as challenges or flaws. You can gain a greater understanding of the possible benefits and distinctive perspectives that various languages and communication styles might provide by acknowledging and valuing linguistic variety.