This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
All are grass root worker's except – 
Select and explain. 
A. Anganwadi workers, B. Traditional birth attendants, C. Village health guide, D. Health assitants
D: Health assitants
Answer: D: Health assitants 
Explanation: Gross root level workers are health workers at the lowest level, i.e., at village level.
Health assistant work at subs centre and PHC levels.
Primary health care in India
Primary health care can be divided into following levels : -

1. Village level (Grass root level)

To implement policy at village level, the following schemes are in operation.
Village health guides scheme
Training of local Dais
ICDS scheme → Anganwadi worker.
ASHA scheme


Sub-centre level
Primary health centre level
Community health centers level.