Which best describes conservation, as it applies to environmentalism?

a.) the preservation and protection of land and other natural resources for enjoyment by future generations
b.) the economic use of natural resources in a careful, controlled way
c.) the idea that individual rights take precedence over rights of the state, including rights to land use
d.) the ban of logging and clear-cutting on federal forest lands
e.) the practice of not allowing burning in national parks

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation:

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.