The error in the possessive construction is that, instead of passenger's, it should be "passengers'". The apostrophe should be after the letter "s" because the noun is in the plural form. The correct sentence would be "Passengers' concerns about cell phone use on planes are justified."
A. I think I will stay home tonight
Demetrius says "I love thee not therefore pursue me not" in A Midsummer Nights Dream, by William Shakespeare
I don't think there is a comma.....
I think it's the last one. I hope you find the right answer.