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Answer (A) is correct . Nonvalue-adding activities are those that do not add to customer value or satisfy an organizational need. Inventory activities are inherently nonvalue-adding. Thus, a system, such as JIT, that promotes lean production and reduces inventory and its attendant procedures (storage, handling, etc.) also reduces nonvalue-adding activities.

Answer (B) is incorrect because The dependability, not number, of suppliers is increased.
Answer (C) is incorrect because Standard delivery quality, not quantity, is increased.
Answer (D) is incorrect because The number of deliveries is increased. Fewer goods are delivered at a time.