A phrase/idiom in bold is given below. Following this phrase are given three sentences, which use the phrase in bold. The phrase may or may not be used correctly in one or more sentences. Identify the sentence(s) that use(s) the phrase correctly, both in terms of grammar and context. Demand-supply gap
i) I'm keenly aware that the lack of cybersecurity standards, coupled with satellites' complex demand-supply gap and layers of stakeholders, leaves them highly vulnerable to cyberattacks. ii) Even during tough times like the Great Recession of 2009, as per the Company's internal research, there existed no demand-supply gap. iii) The UK is the leading/significant region across the world in terms of market share owing to the rising demand-supply gap of Industrial Hose among its end-users in the region.

The phrase 'demand-supply gap' expects that there must be a gap/difference between the 'demand' and 'supply' of the subject/object being talked about in the sentence. In sentence i, the correct usage would be - 'supply chains' (the sequence of processes involved in the production and distribution of) in place of highlighted phrase because the sentence does not talk about the gap between the demand and supply, but it intends to convey that the complexity of production process and the multitude of stakeholders involved makes it more vulnerable to cyberattacks. Hence, 'gap' is not meaningful in the sentence. Sentence ii makes use of the given phrase correctly as the sentence conveys that even during a difficult period like the Great Recession of 2009, the Company had a well-balanced demand and supply (of whatever goods or services it produced). In sentence iii, the correct usage would be 'demand' in place of 'demand-supply gap'. The sentence tries to convey that because of the increasing popularity of the 'Industrial Hose' in the region, the UK is the leading market for the product. Thus, the sentence talks about only the 'demand' and not about the 'supply' of the product, rendering the use of the given phrase incorrect here. The answer is option (d).