Answer:
D - Tier 2 supplier.
Step-by-step explanation:
Tier 1 and Tier 2 suppliers usually refers to suppliers of the automotive industry. A Tier 1 supplier deals directly with the client (just like Lear Corporation and Ford in the example) whereas a Tier 2 suppliear supplies products to this Tier 1 suppliear (just like Jones Manufacturing and Lear Corp.) which then supplies to the OEM.