The revision presented in option B effectively incorporates transitions to improve the flow of ideas. "in changing his perspective" connects two sentences. The dependent clause intruduces the sentence with the information about how he shows the way he feels today, in contrast to how he used to feel. In A, "despite" shows contrast. In C, "However" also indicates contrast. In D, " and because" infers tha his using a simile is the cause for technology and support bing important.
