Answer:
It is most likely A.
Explanation:
All of the others have to do with emotion.
In the laboratory, it's your home turf and you can do whatever you want, but in the field, you probably are getting paid to do good work and discover new things.
It is important for consequences to match the behavior because if you give the wrong consequences the child will think that the behavior is acceptable, or if you give too much consequences for something that isn’t that bad, the child will think that everything they do is bad and will be scared to do anything, in fear of getting punished.