If you want to inform your customers about a new service what do you use? a. memo b. instructions c. advertisement d. letter im thinking its memo?

If you want to inform your customers about a new service but also about policy changes or price changes and similar things, you use memos. This is the best option from these four. Because memo is a brief, straight to the point and informal way of communication that is usually used with the customers.

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there is no passage what do you mean?

give me the passage and i will answer your question