Answer:
Option C - The firm, in the long run, is the longest for Boeing because aircraft production requires large, specialized machines and shortest for Wacky Jack's, is the correct answer choice.
Step-by-step explanation:
Given that Boeing (a producer of jet aircraft), General Mills (a producer of breakfast cereals), and Wacky Jack's (which claims to be the largest U.S. provider of singing telegrams).
The firm, in the long run, is the longest for Boeing because aircraft production requires large, specialized machines and shortest for Wacky Jack's. The reason is that the provision of singing telegrams requires primarily labor.
Therefore, option C is the correct answer choice.