Ahmed is a social activist. He organized demonstrations and other forms of civil disobedience in California against fur dealers because he firmly believes that it is wrong to kill animals for their fur. According to Kohlberg, Ahmed is in of the postconventional level of moral development. Group of answer choices

answer; ok in rural area most people depend on private transportation(cars),pick up truck,donkey and buggy: ),and urban people can walk or ride public transportation,bus,train cab,uber.

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.