The correct answer is A. Nuclear Physics.
Nuclear physics is the field of physics that studies the structure, properties, and behavior of the atomic nucleus. The atomic nucleus is the small, dense region at the center of an atom, which contains most of the atom’s mass and is composed of protons and neutrons. Nuclear physics is a subfield of particle physics, and particle physics is a subfield of physics.
Biophysics is the study of the physical properties of biological systems. It is a multidisciplinary field that draws on physics, chemistry, biology, and mathematics to understand the structure and function of biological systems. Biophysics is used to study a wide range of topics, including the structure of proteins, the function of cells, and the transmission of nerve signals.
Atomic physics is the study of the structure and properties of atoms. It is a subfield of physics that deals with the behavior of electrons and other subatomic particles in atoms. Atomic physics is important for understanding the structure of matter and the properties of light.
None of the above is not the correct answer.