At an intersection without limit lines, the driver should stop prior to the pedestrian crosswalk.
a. true
b. false

TRUE

Explanation:

Respect for traffic rules is necessary for everyone to have the possibility to travel safely. Pedestrians must obey the rules of crossing, while drivers must obey the signs and traffic regulations. In the case of an intersection without boundary lines, the driver must stop the car before the pedestrian line so that people can cross safely, as these people have a preference for crossing in the crosswalk. After that, the driver can continue his/her journey.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.