2. With five seconds left in the game, an illegal time-out was called by one of the players.

you need to include the text. we have no idea what you are referring to

its repetition emphasizing that the chain is his own. sorry if i am wrong.

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).

c is the final ! :