阅读下面短文，从每题所给的A、B、C、D四个选项中选出可以填入空白处的最佳选项。Sargassum is the smelly seaweed piling up on beaches across the Caribbean. It isn't something most people 1 kindly. But for Omar de Vazquez, a gardener, it was something like a(an) 2 .
Years ago, as part of his gardening business, Omar launched a beach cleanup service to 3 the leafy seaweed. But, as its 4 intensified, he started considering how to turn it into something useful, and in 2018 he 5 a way to use it in building blocks. He started his company—SargaBlock to market the bricks which are being 6 by the United Nations Development Program (UNDP) as a sustainable solution to a current environmental problem.
"When I look at SargaBlock, it's like looking in a 7 ," he says, comparing his company to overcoming his personal 8 , including drug and alcohol addiction. "That was a time when I felt unwanted and 9 , like the sargassum people complained about."
Luckily, Omar grew up in nature and poverty, which 10 his character and turned him into someone who takes action. He wanted to make something good out of something everyone saw as bad. Omar then put his idea into 11 , mixing 40% sargassum with other organic materials, like clay, which he then puts into a block-forming machine. The process was 12 .
The UNDP selected Omar's work for their Accelerator Lab, which 13 and recognizes innovative solutions to environmental challenges globally. The idea is that some of the most timely and creative 14 come from locals suffering from environmental dilemmas 15 .
