Explanation:

- Robbery:

- Involves taking property from a person with intent to permanently deprive them.

- Uses or threatens to use force or intimidation.

- Happens when the crime involves force and theft from an individual.

- Dacoity:

- Involves five or more persons committing or intending to commit robbery.

- X is acting with four others, totaling five individuals.

- Attempt to murder:

- Involves actions directed towards killing a person.

- The main intent here is to obtain goods by intimidation, not to kill.

- Theft:

- Involves taking someone's property without consent.

- Does not include the use of force or intimidation.

- Correct Answer: Dacoity.