Answer:
d. watching children play in a park and recording their behavior
Explanation:
Naturalistic observation is one of the methods used in research by the psychologists. The subjects in this experiment are observed in their natural environment. The behaviors are then analyzed and examined to draw certain conclusions out of them. Such researches help in getting a better conclusion and idea about the reaction ad behavior of the people.
Motion of heat inside and object
By definition, a "concurrent power" refers to a power wherein it is "shared by both the State and the federal government." Therefore, the answer for the question would be "<span>shared by national and state governments." which is letter D. In addition, these powers include regulating elections, and taxing.</span>
