To give some extreme examples, any system is available at any time, but in terms of people's daily life, how to treat life, others, pain, fear, dignity, or the achievements of others, can best manifest the domination in a country. The universal values of people's daily behavior. Ignore people who are killed by cars and don't help elderly people who fall down. There are all kinds of fraud and cheating. All of these, the disadvantages in value concepts may be more than Deserters on the battlefield, clashes and deaths in protest marches are even more shocking, just because it is too routine, and it is really what we are used to. To add a head sentence before the above text, what is the most appropriate? ['The so-called values refer to a kind of thinking or orientation in which people identify affairs and discriminate between right and wrong.', "The so-called values should be reflected in people's daily lives.", 'We have lost some of our customary moral commitments that have been passed down by humans for thousands of years.', 'Lack of values is an important issue facing certain social groups.']