Answer:
fewer
Explanation:
The others don't make any sense and you could do the process of elimination so you would eliminate lesser and few so then your left with the words less and fewer but in this case fewer makes the most sense.
C
B.
Back in 1974, Kissinger spoke of the "thin edge between hope and hunger." A generation on, it is time to take it seriously.
I would say PDF, it has always been professional. You could also ask your teacher, but it shouldn't matter much.
