Which one of these is a feature of dictatorship

The correct answer is (D) All of these.

Explanation:
A dictatorship typically has:

No Constitution or a constitution that can be easily overridden by the ruler.

No value of public opinion — decisions are made without considering citizens’ will.

Monopoly over power — all powers concentrated in one person or a small group.

Examples include historical regimes like Hitler’s Germany or Mussolini’s Italy.