Which division of the Orange Book deals with discretionary protection (need-to-know)? 

Answer options:

A. D
B. C
C. B
D. A

B

C deals with discretionary protection.See matric below: 

TCSEC Matric - The following are incorrect answers: D is incorrect.D deals with minimal security. B is incorrect.B deals with mandatory protection. A is incorrect.A deals with verified protection. Reference(s) used for this question: CBK, p. 329330 - and Shon Harris, CISSP All In One (AIO), 6th Edition , page 392-393