Define 'bug' in the context of computer programming.

In the context of computer programming, a 'bug' refers to an error or flaw in the code that results in unexpected behavior or outputs when the program is executed. Bugs can stem from various sources, including syntax errors, logical mistakes, or incorrect assumptions made by the programmer during the coding process. Identifying and fixing these bugs is a crucial part of the software development lifecycle, as they can lead to system crashes, incorrect calculations, or security vulnerabilities.

Understanding bugs is essential because they directly impact the functionality and reliability of software. This comprehension equips developers with the necessary insight to implement effective debugging strategies, ensuring that their programs perform as intended and meet user expectations. All other options refer to aspects of programming or software development but do not capture the essence of what constitutes a bug in programming.