I am not sure I understand your multiple choices for answers, but the correct words to put into your sentence are: 'explains', and 'is'. Because the word 'either' has been used, that changes the the word after lantern from multiple to singular.
It is simply saying that all is now in chaos. I am assuming the part that is confusing is "the quiet sands have run." It could easily be alluding to the way that during a sandstorm, the calm sands of the surface are no longer there as the chaos of the storm casts them about.
Because it will help prevent the sickness from forming or worsening into a more deadly form
Question: <span>What reason does Churchill </span>give for going forward with the war
Answer: Churchill said that the war had to happen since failure in being apart of it would cause complete obliteration. ((BOOM!!)) It would destroy Europe and England. He said that they have to go to war and win no matter the cost.