1. On our way to the library, we witnessed (or saw) a flock of birds flying.
2. Lying on the desk, was tom student’s paper.
Your answer would be B)Recklessness. Plethora means that you have plenty of something and scarcity means that you do not, so in this using antonyms to determine the relationship between the two words, Caution is to Recklessness.<span />
Dear (friend),
It is such a pleasure for me to be writing you this email regarding my favorite subject in my school, which is (subject). This subject is outstanding. It not only helps me understand (the purpose of the subject), but it also helps me in (extra activities the subject has brought to you). In my honest opinion, it is one of the best subjects because (3 reasons). All in all, you've got to tell me if we match!
Yours sincerely,
(name)
The answer is C. Different.
A sentence example would be: the color red is different compared to the color blue.
Red is not the same color as blue