D

[解析]作者在第三、四、五段中讲了什么是梦想杀手。第三段提到People who can’t or don’t want to see your dream fulfilled can kill your dream．第四段提到don’t let fear，threat，doubt，lack of finances，etc．tell you that you can’t fulfill your dream．第五段提到Time is another one of those dream killers．由此可知答案包含了A、B、C三个选项。答案为D。