Some people are afraid of computers,---- in fact their whole

Some people are afraid of computers,____ in fact their whole purpose is to make life easier.which 我在腾讯搜搜找到答案了 原题答案给错了，应该选whenwhen还有尽管，虽然，可以相当于even though; in spite of the fact that sth is true.people have this fear of computers,when in fact their whole purpose is to make life easier.They kept trying when they must have known it was hopeless.