Which sentence in paragraph 4 is in the passive voice? Select one:
O a. (21) A variety of solutions has been suggested.
O b.(22) They address various aspects of the problem.
O c. (24) They suggest tighter controls on Internet use and the
installation of security cameras in teachers' offices,
O d. (25) These measures might help reduce cheating.

I think it is the last one

life 2200 right now look pretty good because on how quickly humans are advansing, life will be a breeze. most by by then would have out lawed disese.most wouldn't have to work anymore beacuse everything would be free. the econamy for most countires would be really good, also by then u.s.a would have probably would have expaned its borders.

so that counculeds my thoghts of how 2200 is you for reading

what makes a hero is someone who tries and acres and then to save people and it’s not their jobs to save them just a normal person that has no experts of saving people would jump in to action without it twice about doing it. me that’s the defection of a hero!