本句是一个复合句，for those who think they are exercising their rights to make choices 是介词短语在句子中作状语，其中who think they are exercising their rights to make choices是定语从句，修饰前面的those；主句部分为the whole system is merely an illusion, 句型为：主语＋系动词＋表语；a false idea created by companies and advertisers... products为同位语，其中created by companies and advertisers为后置定语，hoping to sell their products 为伴随状语。