Explanation:

- Rani's current speed is 475 meters per minute.

- If she travels at 1.2 times her current speed, she would cover 475 x 1.2 = 570 meters per minute.

- To find the distance covered in an hour (60 minutes), multiply her speed by the number of minutes in an hour: 570 meters/minute x 60 minutes = 34,200 meters.

- Convert meters to kilometers by dividing by 1,000: 34,200 meters = 34.2 kilometers.

The correct option is:

Option 3: 34.2 km