Explanation:

- Option 1: Dacoity

- Dacoity refers to a form of organized robbery by an armed group.

- Attempting dacoity is punishable by law.

- Option 2: Suicide

- Suicide refers to the act of taking one's own life.

- An attempt to commit suicide is not a crime in many countries, and hence not punishable.

- Correct Answer

- Option 3: Murder

- Murder involves the unlawful premeditated killing of one person by another.

- An unsuccessful attempt to commit murder is punishable.

- Option 4: Kidnapping

- Kidnapping is the unlawful taking away or transportation of a person against their will.

- An attempt to kidnap is a criminal act and is punishable.