Answer:
Field research.
Explanation:
Since the sociologist studied the learning capacity of toddlers by joining a preschool for six months, he has likely conducted a field research or a field study. Field research is the collection of raw data outside a laboratory or a library. It is a qualitative method of data collection that aims to observe, interact and understand people while they are in a natural environment. It focuses on capturing live experiences.
<span>Absolute advantage is the ability to produce a good or a service at a lower production cost than competitors. Comparative advantage is the ability to produce a good or service at a lower opportunity cost than competitors.
Absolute advantage refers to the ability to produce a good more efficiently than a competitor, which means at a lower cost. Comparative advantage means that, relative to the cost of producing other products, you can produce the good at a lower cost. This is also known as the opportunity cost. </span><span />
Answer: Robert E. Park
Explanation:
The Robert E. park was one of the american urban sociologist and he claimed about the human behavior towards the growing culture in the cities. It basically follow the basic ecology principle that are applied in the wildlife.
Early, he was known as one of the influential figure in the united state. The Robert Ezra park was taught in the Chicago university in 1914. He play an important role in the sociology development.