An imaging procedure displaying the continuous motion of internal structures is:

The answer is "Fluoroscopy."

Explanation:

Fluoroscopy- This is an imaging technique that uses an X-ray beam (often used in diagnostic radiology) in order to detect the motion of internal body structures. This beam passes through the body and with the help of the C-arm (an imaging scanning intensifier), the internal structures can be seen at varying angles. Many people say it is similar to a movie so it is often called an "x-ray movie."

Fluoroscopy is used in many types of diagnostic examinations and procedures such as:

Cardiac cathetirization- This is often used in the treatment of heart disease.

Arthrography- This is used to check the condition of the joints.

Hysterosalpingogram- This is used to check the condition of the fallopian tubes (transports the ova from the ovary to the uterus) and uterus (where eggs are fertilized) of women.

i think your answer is a. coordination