Discussion
Which region surrounds an antenna immediately and stores rather than radiates energy?
Answer: B
Very close to the structure the fields are predominantly reactive, storing energy and returning it to the antenna each cycle rather than carrying it away. Beyond it lies the radiating near field or Fresnel region, where the pattern varies with distance, and beyond that the far field or Fraunhofer region, where the pattern shape becomes independent of distance. The Fraunhofer and far field names refer to the same region, so two of the options describe the same thing and neither can be the answer.
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