The first lady Prime Minister of a country was

The correct answer is: A. Srimavo Bandaranaike (Sri Lanka).

Sirimavo Bandaranaike was the first female prime minister of a sovereign country. She was elected prime minister of Sri Lanka in 1960, after the assassination of her husband, Solomon Bandaranaike. She served as prime minister for three terms, from 1960 to 1965, from 1970 to 1977, and from 1994 to 2000. She was also the leader of the Sri Lanka Freedom Party (SLFP).

Maria Estela Martínez de Perón was the first lady of Argentina from 1973 to 1974 and the president of Argentina from 1974 to 1976. She was the first woman to be elected president of a country in Latin America.

Junko Tabei was a Japanese mountaineer who was the first woman to reach the summit of Mount Everest. She was also the first woman to climb all seven of the world’s highest peaks.

Therefore, the correct answer is A. Srimavo Bandaranaike (Sri Lanka).