Explanation
Extortion is a criminal offense where someone obtains property, including immovable property, or induces another person to do or refrain from doing an act through the use of force, threats, or intimidation. In cases of extortion, the offender typically seeks to obtain something of value from the victim by exerting pressure or coercion.
While immovable property is not generally the subject matter of theft, robbery, or dacoity (which typically involve the taking of movable property by force or violence), it can be the target of extortion if someone uses force, threats, or intimidation to obtain ownership or control over the immovable property.
Therefore, the correct answer is C: Extortion.