How does that emphasis on nature reflect the everyday life of the people

Because the people used envirement to meet their needs.
One of the most common example would be the use of water. Water will always become the central of every population because we both need it to sustain our living and the living of other organisms that will become our food (agricultural products adn other animals)

The correct answer is D. Panama was an important route by which the treasures of the Incas's were transferred to Spain.

The Colonial Transisthmian Route of Panama was a land interchange between the Atlantic and the Pacific oceans across Central America. Spanish trading system crossed Panama in what was known as the “Intercontinental Royal Road”, during the 16th to the 19th centuries.  

The Colonial Transisthmian Route of Panamá connected Panama to regions such as Spain, Canarias Islands, and the Caribbean.