Final answer:
Yan's manager will likely inform him that federal legislation requires that he has the recipient's consent before sending commercial electronic messages, which aligns with option c.
Step-by-step explanation:
Yan's manager is likely to advise him on the importance of compliance with federal legislation regarding the sending of commercial electronic messages. Yan must ensure that he has obtained the recipient's consent before sending them such messages. Therefore, the correct advice from his manager would be option c. Federal legislation prohibits the sending of commercial electronic messages without the recipient's consent.
This legislation is designed to protect individuals from unsolicited marketing and spam, and it typically includes email messaging as well as other forms of electronic communication.
Furthermore, Yan's manager might also remind Yan to maintain a professional tone in his communications, to use proper grammar, spelling, and punctuation, and to be very careful about the content of his emails, as they reflect on both Yan and the company and could easily be forwarded to unintended recipients.