Which Principle of Parliamentary Procedures Is Express in the Following

Multiple Choice

Which Principle of Parliamentary Procedures is express in the following rules: (1) Only one person may speak at a time,(2) Only one proposal or subject may be discussed at a time,and (3) Members must limit their remarks to the topic under discussion.

A) Majority rule
B) Minority rights
C) Equal opportunity
D) Balanced discussion
E) Orderly Progress