Perhaps a parent's most important contribution toward raising a trustful child is to develop a relationship founded on trust. A child of any age will feel proud and grown-up if parents frequently show their trust. In court a defendant  is innocent until proved guilty. But in the family, a teenager "defendant" is too often assumed guilty. Even when the child is caught in a complete lie, this should not be the end of trust. A parent can tell a child that a single lie is forgivable. Yet it should be clear that if lies continue, the child, like the boy who cried wolf, will suffer loss of trust. When my wife and I discovered that our son Tom, then 13, had lied about throwing a party while we were away, we grounded him for a month. We also told Tom that we could no longer trust him, and we could not allow him to stay alone overnight again. This loss of freedom was an important lesson; he learned how hard it is to live with people when they don't trust him. As a result, now more than three years later we can again trust Tom to stay alone overnight. Parents must always remember there is no easy answer to this universal problem of lying. We can set a good example, allow for privacy, monitor friendship, develop trust and punish wrong doing, but still we discover our child has lied to us. Finally that's why there is a need for trust on both sides of a parent-child relationship. Lying destroys closeness and friendship. For that reason, parents should always try to give a child the feeling that they can be trusted with the truth. Parents may start with a child's trust, but as the child grows older, parents must earn it. According to the passage, the writer believes that   _  .
parents shouldn't punish their children even if they lie it is not easy to deal with the problem of lying as parents there are effective ways to prevent children from lying children will stop telling lies as they grow up