what is the best advice to follow when using texting or instant messaging (im) in the workplace

The question above contains multiple answers as follows;

a.       Keep a single contact list of personal and professional contacts for efficiency.

b.      Even if you are completing a project or trying to meet a deadline, answer all texts or instant messages immediately.

c.       Feel free to send sensitive or confidential messages to people you know. d.      Check with your supervisor to learn about your organization's messaging policies. The answer is (D) Check with your supervisor to learn about your organization's messaging policies.   To use IM (Instant Messaging) and text messaging professionally in the work place, always: 1.       Follow company messaging policies and do not disclose sensitive information 2.       Separate business contacts from friends and family and avoid unnecessary chitchat. 3.       When you want to meet a deadline, ensure your status unavailable.