Q.Read the following passage and answer the question: A pioneering scheme has been started recently in Southampton on England's South coast to educate motorist who have been convicted of drunken driving. The penalty for drunken driving might be the loss of a driving license and a heavy fine. But under the new scheme, convicted drivers do not pay the fine. Instead they have to attend eight training sessions-once a week, organised by the local authority probation service. Designed to demonstrate the damage alcohol can do, the scheme was devised by senior probation officer John Cook. He said about a quarter of the people who came to him had a drink problem, but had not realised how much they were drinking. One way of getting the message across was to make the drivers pour out their usual single measure ration of alcohol and then measure it. Almost everyone pours out not a single but a double at least, an example of how easy it is to have more than just one drink and to encourage other people to do the same. The instructors on the course are giving clinical evidence of the effects of alcohol on the body and brain. The sober truth is that drinking badly affects driving skills, although the drinker might like to believe otherwise. Question: The _______ truth is that alcohol: