Explanation:

- If death is caused after theft, to carry away property, it becomes a severe offence.

- Dacoity (Option 1) involves robbery committed by 5 or more persons together.

- Extortion (Option 2) means forcing someone to give property using threats but does not require actual theft or causing death.

- Robbery (Option 3) is theft with violence or threat of violence. If death is caused to commit robbery or while carrying away property, it becomes "robbery with murder", a very serious crime.

- "None of the above" (Option 4) isn't correct, since one matches.

Option:3- Robbery is correct.