Evaporative cooling means that the liquid absorbs heat as it evaporates into gas, thus lowering the surrounding temperature for cooling. Evaporative cooling effect means that in a social group composed of people with the same purpose or interest, the value of the group is similar to the overall temperature of the liquid. When the members with higher value leave the club, the average value of the community itself will decrease.
According to the above definition, which of the following belongs to the evaporative cooling effect?
A singer in a well-known pop group died unexpectedly, and a large number of fans believe that the singer's departure has greatly reduced the group's overall singing level