Explanation:
X-rays are a form of electromagnetic radiation, which means they consist of oscillating electric and magnetic fields. These waves can interact with matter in several ways, including absorption, scattering, and reflection.

Deflection of X-rays:
X-rays can be deflected by various phenomena, such as diffraction and scattering. However, the question specifically asks about the deflection of X-rays by fields. Here, we consider different types of fields and their effects on X-rays.

Electric Field:
X-rays are not deflected by an electric field alone. Electric fields can influence charged particles, causing them to accelerate or decelerate. However, X-rays are not charged particles, so they do not experience any significant deflection in an electric field.

Magnetic Field:
X-rays are deflected by a magnetic field due to their electromagnetic nature. When X-rays pass through a magnetic field, they experience a force perpendicular to both the direction of the magnetic field and the direction of motion. This force causes the X-rays to change direction, resulting in deflection.

Electromagnetic Field:
The term "electromagnetic field" refers to a combination of electric and magnetic fields. X-rays are indeed deflected by electromagnetic fields. When X-rays encounter an electromagnetic field, the electric and magnetic components of the field can interact with the X-rays, causing them to change direction.

None of the Fields:
Option B states that X-rays are not deflected by any of the fields. This is the correct answer based on the information provided in the question. While X-rays can be deflected by magnetic fields and electromagnetic fields, they are not deflected by electric fields alone.

In summary, X-rays can be deflected by magnetic fields and electromagnetic fields but not by electric fields alone. Therefore, the correct answer is option B, "none of the fields."