Final answer:
The authority of the student council is not absolute because the principal can countermand any of its decisions.
Step-by-step explanation:
The authority of the student council is not absolute because the principal can countermand any of its decisions. This means that the principal can overrule or cancel out the decisions made by the student council. The principal has the final authority in the school and can exercise their power to countermand any decision made by the student council.