Question

quiz
1 which selection from the introduction paragraphs 1 - 3 best develops a central idea of the article?
(a) in august 2021, physicists reported research in a scientific journal about the perfect amount of time you need to wash your hands to clear out particles of bacteria and viruses.
(b) in august 2021, physicists reported research in a scientific journal about the perfect amount of time you need to wash your hands to clear out particles of bacteria and viruses.
(c) the study found that it takes about 20 seconds of washing to dislodge viral or bacterial particles from your hands and that should sound familiar: it is in line with what most public - health experts recommend as well.
(d) hand - washing is one of the most important steps we can take to avoid getting sick and spreading germs to others. germs include the single - celled microorganisms called bacteria as well as the tiny disease - causing agents called viruses.
2 which option best summarizes the authors main argument?
(a) you should vigorously wash your hands for 20 seconds.
(b) washing your hands for more than 20 seconds can be harmful.
(c) a new study contradicted prior cdc recommendations.
(d) a new study supported prior cdc recommendations.
the author of this article provides this evidence to support their claim.
if you move your hands too gently or support too slowly against one another, the forces created by the flowing fluid are not big enough to overcome the force holding the particle down, said study author paul hammond.
is this evidence factual? how do you know?
(a) no, because it does not cite a source.
(b) possibly, because it uses reasonable logic.
(c) partly, because paul hammond is credible.
(d) yes, because it references a scientific study.
in the article/section “faster hand washing works best,” how does the authors description of removing a stain from a shirt support the authors claim?
(a) by convincing the reader that hand washing is easier than other types of washing
(b) by helping the reader relate the hand - washing process to other types of washing
(c) by making the reader believe that hand washing is more important than other types of washing
(d) by highlighting the differences between hand washing and other types of washing

Explanation:

1. The central idea of an article is often a broad - reaching concept. Option D about hand - washing being an important step to avoid getting sick and spreading germs encompasses the overall theme of the article better than the others which are more specific details.
2. The main argument is likely about the ideal time for hand - washing. Option A about vigorously washing hands for 20 seconds seems to be the main point the author is making.
3. The statement references a study by Paul Hammond, so it is factual as it has a scientific study reference.
4. Comparing hand - washing to removing a stain from a shirt helps the reader relate hand - washing recommendations to other types of washing.

Answer:

1. D. Hand washing is one of the most important steps we can take to avoid getting sick and spreading germs to others. Germs include the single - celled microorganisms called bacteria as well as the tiny disease - causing particles called viruses.
2. A. You should vigorously wash your hands for 20 seconds.
3. D. Yes, because it references a scientific study.
4. C. by making the reader relate the hand - washing recommendations to other types of washing