To solve this question, the user needs to be familiar with software development and quality assurance practices.
The statement is FALSE.
Thorough testing can help reduce the number of defects in a program, but it is not possible to completely remove all defects. There are several reasons for this, including the complexity of software systems, the difficulty of testing all possible scenarios, and the fact that defects can be introduced at any stage of the software development lifecycle. Additionally, testing can only identify defects that are visible under the specific test conditions used, and defects may still exist in untested code paths or under different environments.
Therefore, it is important to have a comprehensive testing process, in addition to other quality assurance practices such as code reviews and continuous integration, to identify and address defects as early as possible in the software development lifecycle.