Final answer:
The size of a statically allocated array cannot be increased during runtime as it is fixed at compile-time. To change the size, dynamic memory allocation must be used or a different, resizable data structure should be chosen.
Step-by-step explanation:
The size of a statically allocated array cannot be increased during runtime. Once the size of the array is defined at compile time, it remains fixed throughout the array's lifetime. To create a dynamic data structure where the size can change, one must use dynamic memory allocation techniques such as pointers and heap allocation which are available in languages like C and C++.
In statically allocated arrays, the amount of memory to be used is determined at compile time, and the compiler allocates memory on the stack for the array. Because this memory allocation is part of the compiled code, it cannot be changed at runtime. When increased storage is required, a new dynamically allocated structure must be created, or a different data structure that supports dynamic resizing, such as a vector in C++ or a list in Python, must be used.