To answer this question we need to analyze each available option:
A. An angiogram. Is a procedure used to obtain x-ray images showing blood vessels of the heart as well as blood flux. So this is the correct answer.
B. Electroencephalogram. This is a study of the cerebral function based on its electric activity. So this cannot be.
C. Amniocentesis. Refers to a pregnancy test to diagnose genetic disorders in a fetus, using amniotic fluid, so this cannot be either.
D.. An echogram, which refers to an image created by sound waves of high energy, is an ultrasound so this cannot be.
