Concept:Muhammadu Buhari is remembered among Nigeria's former military heads of state for ruling during the mid-1980s.
This question requires recalling the exact years he held power before his later civilian presidency.
Explanation:He first came to power on December
31,
1983, through a military coup that removed President Shehu Shagari.
As military head of state, he led Nigeria for about twenty months, focusing on discipline and anti-corruption campaigns.
His rule ended on August
27,
1985, when he was overthrown by General Ibrahim Babangida.
The period from
1983 to
1985 covers his entire tenure in office.
Among the given choices, only the range
1983−1985 matches these historical dates.
He later returned as a civilian president in
2015, but that was not a military leadership period.
Answer:D.
1983−1985