The section presents a question related to the maximum number of electrons that can occupy the second electron shell (or energy level) in an atom. The options provided for the answer are:

A. 2  
B. 8  
C. 18  
D. 32  

The correct answer is B. 8, as the second shell can hold a maximum of 8 electrons according to the electron configuration rules. 

Key topics: Electron configuration, atomic structure, electron shells.  
Entities: Electron, second shell, maximum capacity.