"A radiographer (or medical imaging technologist) is a university-trained health professional who works with cutting edge technology to produce X-rays, CT (computed tomography) scans, MRI (magnetic resonance imaging) scans and other medical images to assist clinical radiologists and other doctors "
The learning in geometry would be most helpful to medical imaging specialist. Thus, the answer is letter D. They are responsible for procuring high quality images that will be the aid for medical specialists and doctors in diagnosing different medical conditions.