Mark, a senior editor at Logi Corp., is in charge of editing the articles written by Bruno, a newly hired employee. He notices many grammatical errors in Bruno's articles and decides to write a feedback message to Bruno. Which of the following guidelines should Mark follow when composing the message?

a$.$ Use evaluative words while presenting opinions about Bruno's abilities

b$.$ Write the message using the deductive outline

c$.$ Keep the message short and general

d$.$ Include specific, verifiable facts