18 students have not given their speeches.
54 divided by 3= 18.
The answer to this question is <span>Isolation / Limited Interaction
</span><span>Isolation / Limited Interaction refers to the lack of contact that happens between individual and the society.
Due to the lack of interraction, that individual may started to develop beliefs or point of view that stray away from what's allowed within the society.</span>
its currency weaken, whilst those with a trade surplus will see its currency strengthen.
Hope that helps :)