Which calendar reform is credited to Caesar's dictatorship?
A lunar calendar of twelve fixed 28-day months
Replacement of the consular year with a fixed Olympiad cycle
Abolition of any method for correcting the calendar's drift
The Julian calendar, a solar calendar of 365.25 days✓Correct answer
Explanation
Caesar introduced the Julian calendar in 45 BCE, a solar calendar with a leap day every four years that corrected the drift of the old Roman lunar system. He did not introduce a 28-day lunar calendar, adopt the Greek Olympiad cycle for dating, or remove all mechanisms for correcting calendar drift.