In a broad sense, environmental culture includes both material and spiritual results; in a narrow sense, it includes only spiritual results. It mainly refers to those obtained on environmental protection issues, national, national, Even the broad consensus of the entire human race, as well as various cultural and artistic expressions that contain these "consensus" content. What does the word "it" in the passage refer to? ['Environmental culture.', 'Broad environmental culture.', 'Narrow environmental culture.', 'Spiritual and material results.']