Which of the following is an example of a theme with a dual nature?

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).

industrialization in great britain began with the global 'industrial revolution', a pioneer. industrialization in russia was the last in europe, a laggard.

great britain’s industrialization was driven by individual citizens, while russia’s was guided by the government.