阅读test1的No13

which one of the following ,if true,will give the author the most cause to reconsider the recommendation regarding to  political offer send exception?

b.more countries started eradicating person acused or covicted of a terriorist

d the nations the the world sharply decreased their use of their political offense exception accused of various types of relative political offenses

Can anyone tell me about the distinction between these two choices.Thanks a lot first.