HELP!!

12. By the 1990s, scholars estimate that about what percent of all combat-related deaths are civilians rather than soldiers?
A.
10
B.
25
C.
50
D.
90

13. Experts say that it is not really important to understand what causes terrorism; we just need to stop it.
A.
True
B.
False

14. Which perspective argues that wars happen when a country or group of people feel that the benefits will outweigh the cost of not going to war?
A.
Nature of human nature
B.
Trade-off analysis
C.
Relations among states
D.
Youth bulge

Class- current affairs