Which of the following is not true of all antagonists? they provide conflict. they serve as opposition. they affect the main character. they are all bad people.

the false answer is: "They are all bad people".

Explanation: In literature, an antagonist can be anything that threats the protagonist, providing an obstacle, a challenge, confusion, etc. It may be represented by a human force, a trait that belongs to the protagonist, a character that is unlikeable for the audience, nature forces such as disasters, society rules, among others. Having this in mind, it's easy to see that not necessarily an antagonist is a villain or a bad character.

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).