It’s should be (D)
Through the passage we gather the idea of having lasting peace among ourselves and with all nations
Absolutely. Transcendentalists believed in the power of nature. Emerson and Thoreau were two major Transcendentalists who loved nature and held it in high esteem. Emerson saw nature as a means by which we can understand not only the physical world, but also the spiritual one. To him, nature was a form of the divine. Therefore, Transcendentalists would absolutely support environmental rights, or anything that aims to protect the environment.
Has seen is the verb phrase