If you were a specialist working for the national security agency, your main job would likely be a. analyzing data from spy satellites. b. working in the field to carry out covert operations. c. analyzing and breaking coded messages. d. electronic surveillance.

I believe the answer is: D. electronic surveillance.

Electronic surveillance refers to the act of monitoring the usage of electronic device of the people within a certain territory (such as emails, phones, text messages, etc).  National security agency tend to do this in order to detect a certain key phrases being used in the device and prevented an act of terror from happening in the first place.

a sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°c. if the system is at dynamic equilibrium, which of these statements is true?  

answer; a farmer who refuses to fight in his country's army;