Modern warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exist people in military establishments who think that chemical agents are useful tools for their cause.
Which of the following statements best sums up the meaning of the above passage:
Two main essence is that chemical agents may be used in military purpose, so an efficient answer is (d) among (b), (c), (d). People in military establishment like to use chemical agents in war.