In paragraph 19, how does alvarez develop and refine the ideas from paragraph 16-18?

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

d) sarah's natural reaction to being accepted into college suggests that she has no other dreams.

sir, we have done everything that could be done to avert the storm which is now coming on" is the sentence that best articulates this. then he gives the examples.   mark me brainliest

ieoiw what en the: enswer is b