The answer is the second choice
initiate laws and hold referendums on existing laws
NOT THE ANSWER
They opposed it because they feared that Wilson had made too many compromises in the Senate to get it passed.
Gave too little power to the central government. States had more power and freedom to pass laws and do basically anything they wanted to without much backlash
humanism is a philosophical and ethical stance that emphasizes the value and agency of human beings, individually and collectively, and generally prefers critical thinking and evidence (rationalism and empiricism) over acceptance of dogma or superstition.
[hope this helped!]