Answer:
correct answer is Office of Laboratory Animal Welfare (OLAW)
Step-by-step explanation:
PHS ( Public Health Service ) is an agency which involves animals for use in the department of health and human service
and (OLAW) the Office of the Laboratory Animal Welfare is the responsible
for the monitor in compliance with Public Health Service policy and
their guidelines
and Office of the Laboratory Animal Welfare relies very important for the animal research
so correct answer is Office of Laboratory Animal Welfare