Read the following paragraph. the underlined sentence is the main idea of the paragraph. which sentence can be added to the paragraph as supporting evidence for its main idea? it is our responsibility to save forests because we are dependent on them. forests are an important part of the earth’s ecosystem. they maintain the oxygen levels in our atmosphere. they shelter many animals and are home to a wide variety of trees. but even beyond that, they are important for the survival of the human race. since the beginning of time, our ancestors lived and survived in the forests. even today, some human tribes can be found in forests. most tribal communities depend on forests for their livelihood. their survival is deeply connected to the health of the forests. in fact, all of us human beings are ultimately dependent on forests for our survival. a. many rare and endangered types of animals live in the forests. b. the yanomami people of brazil get their food and shelter from the amazon forests. c. forests are in danger because they are being cut down in many countries. d. forests are an important part of the cultures and traditions of many countries.

Read this excerpt from "herd about the flu." the flu shot prevent huge numbers of infections. even when it doesn't fully prevent infection in every person, the shot makes any flu infection less serious. on a global scale, the vaccine can reduce the number of infections only if most people in the community take it. that's because vaccines need to reach enough people to achieve a "herd immunity," the level of immunity needed to prevent the virus from spreading. if too few people get the vaccine, the people who receive it may not be well protected against infection. so the next time you are at the drugstore, and you see no flu shots available, think about the reasons behind it. drug makers are scared to make too many flu shots because they could lose too much money. they then make fewer flu shots and the effect of the flu shots becomes weaker because not enough people take it. people become more reluctant to take the flu shot since they don't think it will fully work. the demand goes down further and the flu companies make even fewer shots the next year. this could continue until the community changes its mind and we all get the flu shot. "that is a community responsibility," says the president of merck, one of the two remaining flu vaccine manufacturers. which argument best supports the passage's claim that more people should get the flu vaccine to stop the virus from spreading? 1.if too few people get the vaccine, the people who receive it may not be well protected against infection 2. so the next time you are at the drugstore, and you see no flu shots available, think about the reasons behind it. 3.people become more reluctant to take the flu shot since they don’t think it will fully work. 4.drug makers are scared to make too many flu shots because they could lose too much money.