Questão de Língua Inglesa

Which is the correct alternative to complete the paragraph below? Many of the same questions that ___ about coal-powered propulsion ___ of the Internet of Things (IoT) today: What's wrong with the traditional way; how will this benefit my fleet; why do we need to make this change? They ___ all good questions, and they ___ a very natural human interest in the three areas that should matter most in deciding whether to use any maritime technology: safety, effectiveness and cost. The biggest challenges to IoT adoption ___. In large part, this is due to the ready availability of high-performance data collection. (Adapted from: Sea Technology, December 2018).