Answer:
science museum
Step-by-step explanation:
For most of the normal museums, the graduate program is sufficient when applying for the position of curator.
However, because of the complexity of the subject like science, the science museums usually prefer to employ curator who will have Ph.D. in some of the subjects which are presented in the museum. This will ensure that the curator has enough knowledge about the subjects to explain them to visitors in details, and likely connect them to some other fields of science.
This especially goes for national museums, which are the biggest in the county. National science museums almost exclusively will fire those who have a doctoral background.