Final answer:
Music began to be used in health care settings around 1974, marking a recent development in the therapeutic use of music in healthcare. The correct answer to the question is 'B) Recently.'
Step-by-step explanation:
The use of music in healthcare settings has been recognized more recently, specifically since about 1974. The correct choice that matches the notion of 'since about 1974' from the provided options is 'B) Recently.' While music has been a part of human culture for thousands of years, its formal incorporation into health care as a therapeutic tool began gaining traction in the latter part of the 20th century. This integration of music therapy into healthcare signifies an innovative approach to improving patient outcomes and highlights the dynamic relationship between the arts and medicine.