다음 글의 밑줄 친 부분 중 문맥상 낱말의 쓰임이 가장 적절
하지 않은 것은?
Even if lying doesn’t have any harmful effects in a particular
case, it is still morally wrong because, if discovered, lying
weakens the general practice of truth telling on which
human communication relies. For instance, if I were to lie
about my age on grounds of vanity, and my lying were
discovered, even though no serious harm would have been
done, I would have ①undermined your trust generally. In
that case you would be far less likely to believe anything I
might say in the future. Thus all lying, when discovered,
has indirect ②harmful effects. However, very occasionally,
these harmful effects might possibly be outweighed by the
③benefits which arise from a lie. For example, if someone
is seriously ill, lying to them about their life expectancy
might probably give them a chance of living longer. On the
other hand, telling them the truth could possibly ④prevent a
depression that would accelerate their physical decline.