Option 1: This includes the detection of a car crash where an accelerometer can sense the rapid deceleration and trigger the deployment of airbags. So it requires the function of accelerometer.

Option 2: In this case, an accelerometer can detect the sudden change in position of a laptop when it`s falling. This triggers an action to shut off the hard drive to prevent data loss or hardware damage. So it requires the function of accelerometer.

Option 3: An accelerometer in a smartphone measures the tilt and motion. This helps in rotating the display from portrait to landscape mode (and vice versa) depending upon the orientation of phone. So it requires the function of accelerometer.

The incorrect options are Option 1 (Only one), Option 2 (Only two), and Option 4 (None) as all three scenarios do require accelerometer.

Therefore, the correct answer is Option 3 (All three).