The two features from Article I of the US Constitution that could help achieve fair representation and well-debated decisions in a student government legislative body are:
B. setting up a committee to draft initial legislation - Committees allow for detailed examination and discussion of proposed legislation, leading to well-considered decisions.
D. holding elections for student representatives - Elections ensure that representatives are chosen by the student body, promoting fair representation and accountability.
Options A, C, and E do not align with the principles of fair representation and well-debated decisions as effectively as B and D.