It means the "Junior Reserve Officer Training Corps", by the US Armed Forces.
Answer: the formation of a mental image of something.
Explanation: basically you have the mental image in your head of what is being described to you.
Answer: C
Explanation: It would be the most responsible and polite thing to do, not just call out someone else or leave the customer expecting a call.
Perhaps D? It could depend on the context of the story though. I hope this helped, good luck! :)
