A development strategy whereby the executive control modules of a system are coded and tested first, is known as A. Bottom-up development B. Top-down development C. Left-Right development D. All of the above E. None of the above

The correct answer is A. Bottom-up development.

Bottom-up development is a software development process that starts with the lowest level modules and works its way up to the highest level modules. This is in contrast to top-down development, which starts with the highest level modules and works its way down to the lowest level modules.

Bottom-up development is often used when the system is complex and the requirements are not well-defined. By starting with the lowest level modules, the developers can get a better understanding of the system and the requirements. This can help to avoid problems later in the development process.

Top-down development is often used when the system is simple and the requirements are well-defined.

Left-Right development is not a common software development process. It is a process that starts with the left-most modules and works its way to the right-most modules. This is in contrast to right-left development, which starts with the right-most modules and works its way to the left-most modules.

Left-Right development is not a common software development process because it is not very efficient. It is often more efficient to start with the highest level modules and work your way down to the lowest level modules, or to start with the lowest level modules and work your way up to the highest level modules.

None of the above is not a correct answer.