Answer:
Percussion.
Explanation:
It must be noted that the percussion here is different from that of musical instruments. Here, the Percussion is a form of physical examination which one of its reason for doing it is aimed at the determination of the presence of fluid in the body area or not. Each body part has a specific sound at which it brings out, for instance, the bone and the lung; the bone sound somehow solid, while the lung sound like a hollow.
In order to produce these sounds from the body parts, you will have to be tapping on specific areas of the body with fingers, hands, or small instruments.
