Competition protects the freedom of the individual by ensuring that there is no monopoly of power. In contrast to one, all-powerful government, many businesses compete against each other for profits.
 
【正确答案】竞争可以确保没有权力垄断,从而保障个人自由。
【答案解析】 本句翻译时需注意前后的逻辑关系,即“先确保没有权力垄断才能保证个人自由”。by引导的方式状语可以译为“通过……”,但为了使句子更加灵活,更符合汉语习惯,此处可以省略不译。