You're the driver of a one-person-operated double-deck bus. How do you stay aware of passengers on the top deck?

Possible Answers:
a. By counting passengers up and down the staircase
b. By frequent checks upstairs while stopped at bus stops
c. By listening to passengers in the upstairs gangway when approaching bus stops
d. By making full use of the internal mirror system

Think you know the answer to this theory test question?

Try the question by clicking here