Edward Tolman's is the correct answer.
Edward Tolman was an American psychologist and a famous professor who made contributions to the Psychology studies. Through a serie of researches with rats, Edward Tolman was able to develop the Latent Learning in both animals and humans. He argued that people are constantly learning even when they don't make great effort to it. When we drive or walk the same route home everyday, we learn the location of different buildings, places, and objects. If, for some reason, we're unable of taking the route we're used to take, we will have no problem finding a different one to get home.
Explanation:
When the position of a person, location, entity, etc, is measured with regards to another person, location or entity, it is called as the Relative Relation. So when the position of one location is measured with regards to another location, it is called as the Relative Location. Relative location can be measured through Distance, time to travel there or cost.
Now in this question, the relative location of United States with regards to Europe has been asked. The US is located on the North American Continent and Europe is located on the other Continent. US is bounded by different countries like Canada, Mexico, and some oceans. The relative location of US with regards to Europe is 4903 MI.
Answer:
This made double-cropping possible in some areas, and in some places, even triple-cropping became possible ... the hardiness and productivity of various varieties of rice were and are in large part responsible for the density of population in South, Southeast, and East Asia.
Diversity is like people and how different we are. Unity is when we unite. Unity in diversity is speaking about how we need to come together and help each other even though we have our differences.
D. Air pollution is not as much of a problem there