For the Academic Community,a Critical Problem with Secret Research Is

For the academic community,a critical problem with secret research is:

A) It may endanger the lives of the anthropologists who pursue it.
B) The scientific community has no way to assess its validity.
C) It is almost always used for illegal or immoral purposes.
D) It is unlikely to provide benefits to either anthropologists or the people who are the subjects of such research.
E) It can rarely be used to support the tenure and promotion of anthropology professors.