Equity is the fourth E- this means the extent to which the service is available. See p.65 for details on the 4 Es

Comprehensive and Detailed Explanation:
The described relationship includes:
* Joint Product Development:Collaborative involvement in strategic projects indicates a deep partnership.
* Integrated Systems:JIT delivery systems require synchronized operations, reflecting significant integration.
These elements are hallmarks of a significant integration partnership.
Reference:
"Strategic Supply Chain Partnership"-ResearchGate: Strategic Supply Chain Partnership

The correct answer is 'It can lead to a lack of trust' - this is a quote from p.162. The other answers are all incorrect; in a partnership KPIs are joint between the parties- so there wouldn't be a situation where one party doesn't fulfil their KPIs. Commitment doesn't necessarily have a direct correlation with profit so that answer is incorrect. 'Sufficient time and resources are put in' is a positive thing, so can't be a reason who a partnership fails.

partnerships are always win: win p.7

The correct answers are; The marketplace has become more volatile, Working together will create synergies and The need to improve performance to satisfy the end customer. Further Drivers ofPartnership Sourcing can be found on p.127. The other answers are incorrect as entering a partnership won't protect intellectual property rights- in fact that's one of the big risks of entering into a partnership. Partnerships won't increase costs and lead-times, they're likely to decrease them.