I think it is A. Teenagers are an enjoyable and necessary part of our society.
D, Anxiously is describing how he is nervous.
Hope this helps!
One half - singular
Two halves - plural
To contract means to become smaller. Contraction = to become smaller.
You should choose whichever issue is most prominent, then research to find the topic with the most reliable information. from there, you can build your base on that solid information. it has to be facts or a legitimatized opinion, otherwise you can't easily defend your position on said topic. make sure your opinion is well founded. you should also be interested in the topic, otherwise your attention will slip.
