Mastering C++: A Comprehensive Quiz Based on 'Thinking in C++'

When passing an array to a function, it is important to also pass the size of the array in order to safely use the array within the function. Without this information, the function may not know the proper boundaries of the array and could lead to unexpected behavior or errors. While options B, C, and D may also be necessary for certain operations within the function, they do not address the issue of safely using the array as a whole.