Answer:
a custom research.
Explanation:
A custom research is a type of research that is specifically tailored to the client's special and unique needs. This type of research needs to be done because the information that the customer requests is not very common.
For example, the researchers will need to survey 293 women about the effects of rubbing their cheeks against their shirts, and that is not something very common that researchers do every single day. In fact, they must be very careful in order to avoid getting arrested or slapped.