Read the paragraph, then choose the word that best completes the sentence. Technology has made transportation communication, end even everyday chares a lot easier These conveniences may simplify life, but they alse reduce people's activity levels. These days, lack of exercise contributes to more than half of preventable deaths around the world. Many companies are now trying to reverse this trend by making gadgets that motivate people to exercise more.Most of these play music to make exercise less boring. but some do a lot more than that. Some advancements in convenience have been __ to our health. irrelevant B hazardous sensitive D concidental