Answer:
E. Health Occupations Students of America
If Smith is pursuing EKG technician certification program, then he belongs to the health occupation students of America.
Step-by-step explanation:
This is because the EKG technician certification program is meant for certifying of students through the national healthcare association.
He cannot belong to the National Association of health professionals since he has nit yet been certified official.
All the above is given considering that Smith is still a student.