Final answer:
To legally practice Shiatsu in New York State, one must obtain a New York state massage license, which includes education, examination, and fulfilling state-specific requirements.
Step-by-step explanation:
In order to practice Shiatsu in New York State, the correct requirement is c. Get NY state massage license. Although specific Shiatsu training or graduation from a Shiatsu institute can be part of the educational process, New York State mandates that individuals must obtain a state massage license to legally practice any form of massage therapy, including Shiatsu. This involves completing an approved education program, passing a state board examination, and fulfilling other requirements as per the New York State Education Department. Obtaining national certification in Shiatsu could be beneficial for professional development but is not a legal requirement for practice.