Why do you think there are less and less inventions be- coming successful? Answer the question in at least
one complete sentence.

Explanation:

The reason why I think inventions are becoming less successful is because of lack of interest. You could design an amazing invention and go no where because the people aren't interested. The creator of the invention soley relies on the people wanting it or being interested in it.

b.)the road of trials

explanation:

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).