How can a lead firm improve a suppliers performance when the

How can a lead firm improve a supplier\'s performance when the cost to replace the supplier is high?  

a)   report the supplier to the better business bureau  
b)   fire the supplier
c) Engange the supplier in a capability building
d) build the suppliers products internally

Solution

Option c.

When the cost to replace the supplier is high, it would be better to engage the supplier in improving the supplier production capacities through capability building.