Cost effective production is something that is good value, where the benefits and usage are worth the right amount what they paid for them.
Why must Cadbury (and other businesses) always seek to be Cost Effective?
They must be cost effective because it can help profit. If they waste money they are less become or succeed as a successful business.
What can help a factory to produce more in less time and therefore reduce costs?
Different types of machinery can help businesses improve productivity. This also saves money as they wont have to employ workers to do a machines job.