Final answer:
The correct answer is A) brigade commander.
Step-by-step explanation:
The correct answer is A) brigade commander. When an allegation of recruiter impropriety is sent to the USAREC LNO (United States Army Recruiting Command Liaison Officer), it is typically the brigade commander who receives the report. The brigade commander is the highest-ranking officer in a brigade, which is a military unit responsible for conducting operations in support of the mission of the larger organization, such as the USAREC.