Which of the following would be the LEAST appropriate in the closing paragraph of a negative message? Let us know if model #A01 would be a suitable substitution. Our layaway plan will enable you to purchase all the clothes the children need for school. We hope our decision meets with your approval,If the last week in February would be acceptable, I could schedule an afternoon workshop as well

Probably the second one is the least appropriate.

To determine the least appropriate option in the closing paragraph of a negative message, we need to analyze each option and identify one that doesn't align with the negative tone of the message.

In this case, the option "Let us know if model #A01 would be a suitable substitution" would be the least appropriate. This statement seems unrelated to the negative message and is more suitable for a separate inquiry or request.

To confirm this, let's review the other options:
1. "Our layaway plan will enable you to purchase all the clothes the children need for school" - This statement promotes a positive aspect of the message, which would not be appropriate in a negative message.
2. "We hope our decision meets with your approval" - This statement shows an expectation of positive feedback, which is contradictory to a negative message.
3. "If the last week in February would be acceptable, I could schedule an afternoon workshop as well" - This statement offers an additional option, which is not suitable for a negative message.

Therefore, "Let us know if model #A01 would be a suitable substitution" would be the least appropriate in the closing paragraph of a negative message.