Aroman dictator was not supposed to rule for longer than months.

a.2
b.6
c.12
d.18

The answer to the given question is letter B. 6

A Roman dictator was not supposed to rule for longer than six months. The dictatorship was a permanent office among some of the Latin states of Italy. In Rome, it was resorted to only in times of military, and later internal, crises. The dictator’s term was set at six months, although he customarily laid down his powers as soon as the crisis passed.