Which of the following is defined as "the use of electronic information and telecommunications technologies to support remote clinical health care, patient and professional health-related education, public health and health administration."

A) Telehealth
B) Telenutrition
C) Telemedicine
D) Clinical research
E) Social media marketing

Telehealth is specifically defined as the use of electronic information and telecommunications technologies to support remote clinical health care, patient and professional health-related education, public health and health administration. Telenutrition is a specific subset of telehealth that focuses on the delivery of nutrition-related services, while telemedicine is a broader term that encompasses telehealth but specifically refers to the use of technology in the diagnosis and treatment of medical conditions. Clinical research and social media marketing are not related to the definition provided.