Answer:
B) editorials written by students
Step-by-step explanation:
The text shows that after the publication of student editorials, there was a decrease in ideas that did not support the use of the environment as a key component of the curriculum and for this reason the school board was able to approve the new curriculum. So one can conclude that the editorials written by the students were factor was more decisive in eliminating the opposition to the new green curriculum
The excerpt that states this is: " After the publication of the pupils' editorials, the contemptuous debate subsided, and the school board approved the new curriculum. "