Punctuating restrictive and nonrestrictive elements quiz answers: 1.d

2.appositive

3.restrictive clause

4.d

5.a

6. 1st one, 2nd one and 4th one

7.b

8.c

9.d

10.d

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).