Answer:
The Bell-LaPadula property that keeps lower-level subjects from accessing objects with a higher security level is the 'no read up property'.
Explanation:
- The multilevel security policy that is adopted by the United States government for its defense operation related data is based on the Bell-LaPadula model.
- This model proposes that the subjects that are functioning at a lower level should not be provided access to the operation related data that has only to do with higher level operations.