Answer:She is taking an opposition channel
Step-by-step explanation:
Opposition means one has views that opposes those of the other part or person involved due to believing that those views are unfair and unjust to others.
These views are openly shared and one let these views be known and legally stand for their position as an opposing individual.
Alyssa is fighting this injustice that she seek justice through proper channels by going to the human resource manager.
She is taking a stand publicly and fighting to ensure that her opposition views are heard and taken seriously.