Answer: The correct answer is solid solution.
Step-by-step explanation:
Crystalline structure is defined as the structure in which atoms are arranged in a regular arrangement.
A solid solution is defined as the solution in which particles are present in orderly arrangement.
A liquid solution is defined as the solution in which the particles does not have an orderly arrangement as compared to the solid solution.
A gas solution is defined as the solution in which the particles are randomly arranged.
Hence, only solid solution will form crystalline structure.