The incorrect sentence is:
C: "In the long history of the world, only a few generations has been granted the role of defending freedom in its hour of maximum danger."
The subject "a few generations" is plural, so the correct verb should be "have" instead of "has." The corrected sentence would read:
"In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger."
The correct option is (C): In the long history of the world, only a few generations has been granted the role of defending freedom in its hour of maximum danger.
Among scientists, the discovery of the double helix structure of DNA and the genetic code it incorporates is widely regarded to be one of the most significant scientific discovery of the twentieth century.
If the President knew that his allies would let him down so suddenly, he would have handled them with the greatest care.
Thank goodness, the damage to the car was \(\underline{neglectful.}\)
Although the new policy aims to increase efficiency, reducing costs, and enhancing employee satisfaction, some employees feel that the changes are too abrupt and poorly communicated.