Read this paragraph from an argumentative essay. One problem with allowing cell phones in the classroom is that they can be used for harmful purposes. Kids have learned how to bully one another through text messages and social media. Bullying, even by phone, can have permanent, unhelpful effects on kids’ self-esteem. Select the best revision for the paragraph. Change the word "harmful" to "bad. " Change the word "purposes" to "things. " Change the word "bullying" to "teasing. " Change the word "unhelpful" to "destructive. ".

Change the word "unhelpful" to "destructive."

Explanation:

Although not technically wrong, the other choices aren't the best synonyms, and they take away from the paragraph. Since bullying can have drastic negative effects, the best word would be "destructive" instead of simply saying "unhelpful." Destructive has the most negative connotation.

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).

definition was not one of the four methods