Having logged thousands of hours watching primates from chimpanzees to macaques,
chimps and other primates are no longer thought to be natural-born killers by Dr. Swenson, they are attuned to peacemaking.
Simply going by the meaning of the sentence someone watched primates, logging thousands of hours, only B and C make the cut as ‘chimps and other primates’ can’t do that otherwise it would be illogical. So, in ‘C’ Dr. Swenson has some belief as if it’s not his own i.e. the option changes the meaning slightly which is not the case. Option ‘B’ on the other hand clearly communicates that Dr. Swenson watched primates for hours and finally concluded that they are not natural born predators instead primates are peace-loving animals.
A. chimps and other primates are no longer thought to be natural-born killers by Dr. Swenson, they – WRONG.
B. Dr. Swenson has come to believe that far from being natural-born killers, chimps and other primates – CORRECT. As discussed above.
C. Dr. Swenson has now the belief that far from being natural-born killers, chimps and other primates – WRONG.
D. chimps and other primates are not longer thought to be natural-born killers by Dr. Swenson, they – WRONG.
E. chimps and other primates are no more thought to be natural-born killers by Dr. Swenson, they – WRONG.
Answer (B).