While pushing back, train shall be stopped at ________ stop signal. A. Outermost B. Rear most C. Slip D. None of these

The correct answer is A. Outermost.

A train shall be stopped at the outermost stop signal while pushing back. This is to ensure that the train is not in danger of colliding with another train or object. The outermost stop signal is the last stop signal before the train’s destination. It is located at the end of the train’s track.

The other options are incorrect because they are not stop signals.

• Option B, rear most, is not a stop signal. It is the last car in the train.
• Option C, slip, is a type of track switch that allows trains to change direction. It is not a stop signal.
• Option D, none of these, is also incorrect because it is not a valid option.

I hope this helps!