In case of accident, siren is repeated at an interval of ________ minutes. A. 10 B. 15 C. 20 D. 05

The correct answer is: A. 10 minutes.

The siren is repeated at an interval of 10 minutes in case of an accident. This is to alert people in the area and to get their attention. The siren is also used to warn people to stay away from the area of the accident.

Option B is incorrect because the siren is not repeated at an interval of 15 minutes.

Option C is incorrect because the siren is not repeated at an interval of 20 minutes.

Option D is incorrect because the siren is not repeated at an interval of 5 minutes.