Final answer:
The correct answer is c. Meeting dates, times and locations.
Step-by-step explanation:
Informal channels like text message, instant message, or social media are appropriate for communicating certain types of business information. These include:
- Meeting dates, times and locations: Informal channels are a quick and convenient way to share this information with team members.
- Promotional offers: Companies often use social media platforms to announce special deals and discounts.
On the other hand, financial reports and HR policies are typically communicated through more formal channels like email or physical documents, as they require more detail and confidentiality.