Final answer:
The implementation and conversion phase of the SDLC does not require the develop and test software step.
Therefore, the correct answer is: option c) require the develop and test software step.
Step-by-step explanation:
When canned software is used for systems acquisition, the implementation and conversion phase of the Systems Development Life Cycle (SDLC) generally does not require the 'develop and test software' step.
This is because canned software, also known as off-the-shelf software, is pre-developed and usually comes with its own set of pre-designed features and functionalities, thus negating the need for development from scratch.
However, proper documentation is an integral part of the implementation process for reference and future maintenance.
Additionally, having trained Information Systems (IS) personnel is vital to manage, customize as necessary, and ensure smooth integration with existing systems.