PLSSS HELP I GIVE BRAINLIEST Which sentence uses an antonym context clue to help the reader understand
the word frigid?
A. The weather was frigid in Minnesota; it wasn't warm at all!
B. The frigid Minnesota weather was the coldest I had ever
experienced
C. We couldn't believe how frigid Minnesota was; we had to wear our
jackets the entire time!
D. Minnesota in winter is as frigid as a polar bear's playground.

the correct answer would be:  

a. adverb phrase

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).