Answer:
the answer is c) Collective goods offer broadly distributed benefits, while private goods offer particularized benefits
".... people who live in CHINA/ CHINESE PEOPLE...."
Answer:
Weber's law
Explanation:
According to Weber, the psychologists proposed that for each of our five senses, the degree of change in the stimulus that is required to product a just noticeable difference is reliant on the degree of intensity of the first presented stimulus. In other word, the change in a stimulus that will be just noticeable is constant with its first or original stimulus.
Explanation:
Contamination can have undesirable consequences in real experiments, some of them are related to the feelings that may arise in the research participants, the contamination bias reduces the differences between the research groups, and can cause a comparison between the treatments of each different group, the which can generate conflicts and rivalries on the part of groups that consider themselves to be inferior to others. These contamination-related problems can significantly interfere with the research results.