Because BWS and RTS are often difficult for the prosecution to integrate into a trial, many have advocated for testimony about posttraumatic stress disorder (PTSD) instead. One reason why the use of this diagnosis proves to be more helpful in cases in which the victim kills the batterer is that:

A. no one understands BWS.
B. PTSD is better established as a mental disorder.
C. RTS has not been documented.
D. victims of PTSD have public support.

B.PTSD is better established as a mental disorder.

Explanation:

Many have advocated for testimony about posttraumatic stress disorder (PTSD) instead.One reason why the use of this diagnosis proves to be more helpful in cases in which the victim kills the batterer is that PTSD is better established as a mental disorder.

It is worthy of note that a mental disorder can be described as varieties of conditions that it's capable of affecting ones thinking, behavior and mood.

Some of this disorder includes Anxiety disorder, clinical disorder e.t.c

answer; i do believe its (b) 12.5 years of age;