English: By losing your temper, we can make all of ours.
I believe it is irreversibility because ethnocentricity is when youbasically believe your own cultural group is more superior which isnt relevant to this situation. Inevitability is when something basically cant be changed, and power really has nothing to do with this. Therefore, by the process of elimination, i concur that it must be A.)
I think it is the a speaker's <span>behavior</span> knowledge both of the grammatical rules of a language and of the rules for appropriate use in social contexts
Hope i helped you