Which woman prime minister served as the head of government for the longest consecutive period?

Sheikh Hasina Wajid (Sheikh Hasina) served as the Prime Minister of Bangladesh for the longest consecutive period among the options provided, as well as holding the record for the longest-serving female head of government in the world. She served as Prime Minister from 6 January 2009 to 5 August 2024, a span of over 15 years.

• Sheikh Hasina Wajid: 6 January 2009 – 5 August 2024 (15 years, 212 days in her second, third, and fourth consecutive terms).
• Indira Gandhi: Served non-consecutively. Her longest single term was 11 years, 59 days (1966–1977).
• Sirimavo Bandaranaike : Served three non-consecutive terms, with her longest consecutive term being 7 years, 55 days (1970–1977).
• Benazir Bhutto: Served two non-consecutive terms, with her longest consecutive term being 3 years, 17 days (1993–1996). Therefore, the correct answer is (D) Sheikh Hasina Wajid.