Concept:Flexibility is the ease with which a program can be changed or adapted to new needs.
Explanation:A good program must be flexible enough to accept changes without much difficulty.
New features can be added or existing logic can be modified easily.
The whole program does not have to be rewritten from the beginning.
Only the specific parts that need updating are altered.
This saves time, effort, and reduces the chance of introducing new errors.
It also makes the software easier to maintain in the long run.
Option A directly describes this ability.
Option B refers to performance, option C refers to modularity, and option D refers to reusability.
None of these defines flexibility as accurately as option A.
Answer:A. handling of any change(s) without having to rewrite the entire program.