Answer: Option C
Explanation:
The internal source in an organisation are the colleagues where numerous ideas can be generated through brain storming. Colleagues provide innovative ideas which also gives them the opportunity to do creative thinking. This also a quick way of generating the ideas and approaches. High performing employees have more knowledge on approaches.
Peak bodies, associations and other organisations are the external source for generating ideas. They do not form a part of the organisation. Generating ideas from external sources is a time consuming process.