According to Experts at a Conference on Supply Chain Management,increased

According to experts at a conference on supply chain management,increased traceability is the key requirement needed to improve today's supply chains.
-Refer to Supply Chain Management.In this instance,what does traceability refer to?

A) the relative ease with which a shipment can be located and transferred
B) a carrier's ability to move goods over a specific route
C) a carrier's ability to provide the appropriate equipment and conditions for moving specific kinds of goods
D) the consistency with which a carrier delivers goods on time