Select the correctly punctuated sentence. "the daylight is coming," dave said. "we should go now." the daylight is coming, dave said "we should go now." the daylight is coming dave said we should go now "the daylight is coming," dave said, "we should go now."

"The daylight is coming," Dave said. "We should go now."

Explanation:

In the second option, the phrase "The daylight is coming" is lacking quotation marks. The third option is chaotic because it has no punctuation whatsoever. Finally, the fourth option is nearly perfect, but the comma after said should be a period because "We should go now" is independent from "The daylight is coming."

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).