The most accurate conclusion about the change in gender structures in early India from the early Vedic Period to the late Vedic Period is:
Women became socially isolated through purdah but retained rights to own property.
During the early Vedic Period, women had relatively more freedom and rights, including participation in religious rituals and an influence on social matters. However, by the late Vedic Period, societal structures became more patriarchal, leading to increased restrictions on women's mobility and roles, as evidenced by the practice of purdah, while some rights, such as property ownership, were still retained.