Which is the corret alternative to complete the paragraph below?

Many ofthe sarne questions that ____ about coal-powered propulsion ____ of the Internet ofThings (IoT) today: What's wrong with the traditional way; how will this benefit my fleet; why do we need to make this change? They ali 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 ____ . ln large part, this is due to the ready availability of high-performance data collection.

(Adapted from: Sea Techno/ogy, December2018).