Final answer:
The First Lady of the United States between 1977 and 1981 was Rosalynn Carter, who played an active political role during her time in office.
Step-by-step explanation:
The First Lady of the United States between 1977 and 1981 was Rosalynn Carter. Her husband, Jimmy Carter, served as President during this time. Notably, Rosalynn Carter was active politically, frequently attending cabinet meetings and advocating for the ratification of the Equal Rights Amendment (ERA). She continued the increasing pattern of First Ladies who play public political roles, similar to her predecessors like Betty Ford and her successors such as Nancy Reagan and Barbara Bush.
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