In which places can a tram driver let passengers in or out of the tram?

This question is about the places where the tram driver may let passengers on and off. This is done at stops - the answer is B.

A stop is a designated place for passengers to get on and off, adapted so that they can safely walk to and from the tram. Letting passengers on and off anywhere (answer A) would risk them stepping straight in front of a car driving next to the tram. Turning loops (answer C) are only one of the places where passengers get on and off. The Road Traffic Act prohibits opening the doors of a vehicle and getting out without making sure that this will not endanger traffic safety or obstruct traffic.

Legal basis: Art. 45 para. 1 point 3 and Art. 3 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)