Most plays in early american theaters were performances adapted from european plays.
expressionistic
melodramatic
modernistic
stylistic

Most plays in early American theaters were melodramatic performances adapted from European plays.

At the beginning of the history of the theatre in America the plays were mostly melodramas adapted from European plays, for example Shakespeare works were very common at the time.

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).

its a hard situation i cant really answer because the essay is for you to write.