Use the drop-down menu to complete the sentence.Cardiac perfusionistsCardiac nursesEchocardiogram techniciansCardiologists specialize in making sound-wave images of a person’s heart.

Echocardiograms use sound waves to create images of the heart. Echocardiogram technicians specialize in performing these imaging tests, so the sentence is completed by “Echocardiogram technicians.”

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