Discussion

Explanation:

Sentence 1 talks about ‘their resources’ which needs an antecedent. Thus it cannot be the first sentence of the paragraph. Sentence 2 can be the first sentence of the paragraph as it states how modern technology is changing the way which spectrums can be used. Sentence 2 talks about using spectrum as a common property resource. The reason for this is given in sentence 5 as it mentions how the demand for spectrum is increasing due to evolving technologies. This should be followed by sentence 4 mentions a reason for the shortage of supply for the spectrum. Thus sentences 5 and 4 are related as 5 talks about the demand while 4 talks about supply. So we get the link 2-5-4. There is a 3-1 link as 3 talks about the challenges posed to the spectrum managers who have to negotiate to get the maximum advantage possible of the spectrum allocated to them while 1 states how they can utilize their resources efficiently by studying the case studies of the early adopters of mobile technology. Thus we get the link 2-5-4-3-1.
Hence, the correct answer is option 4.

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