Dr Lansing Was Interested in Children's Real-Time Reactions to Loss

Multiple Choice

Dr. Lansing was interested in children's real-time reactions to loss. He had a party and invited all of the participants and their parents. He gave each child a puppy at the beginning of the party. At the end of the party he made an announcement that the puppies needed to be returned to him before they left the party. Dr. Lansing had research assistants throughout the grounds recording the real-time reactions of the children upon news of the loss of their new puppy. The best description for this would be a(n) :

A) blind observation.
B) contrived observation.
C) continuous observation.
D) interval observation.