Final answer:
The maximum driving time in a "day" in Alberta for a commercial driver is 14 hours. Historical regulations set different work hour limits for children based on age. In mathematical problems involving average velocity, the distance covered is divided by the time taken to travel that distance.
Step-by-step explanation:
In Alberta, the maximum driving time allowed in a "day" for a commercial driver is 14 hours, after which the driver must take a certain minimum period of rest before commencing another shift. This maximum workday applies to drivers to ensure road safety and reduce the risk of accidents caused by driver fatigue. Thus, the correct answer to the question is c) 14 hours.
Considering the provided practice problem options, the last information suggests that a historic law established a maximum workday of 12 hours for children ages 13-18, which indicates that such a daily limit was considered the legal maximum for children's work hours in that historical context.
Regarding another practice problem given, if a trucker drives with a displacement of 16 km south in 0.25 hours, their average velocity would be calculated as the displacement divided by the time, which is 64 km/h south (16 km / 0.25 h). However, this specific problem might contain a typo since none of the provided answers match the correct calculation, indicating that the intended answer is likely b) 4 km/h south based on the question's parameters.