Concept:X-rays are electromagnetic waves and carry no electric charge. Only charged particles are deflected by electric or magnetic fields.Explanation:X-rays have no charge. Therefore, they do not experience any force in an electric field or a magnetic field.Charged particles like electrons or protons can be deflected by these fields. X-rays are neutral and unaffected.Thus, X-rays travel in a straight line even when passing through electric or magnetic fields.Answer:D. neither by electric field nor by magnetic field