Answer:
B. verbal, informal
Step-by-step explanation:
-Verbal communication is when the message is communicated through spoken or written words.
-Nonverbal communication is when you don't use language to communicate your message but things like gestures, expressions and body language.
-Formal communication is when you send a message that is neutral, rational and controlled and it goes through a established channel.
-Informal communication is a message that is subjective, emotional and uncontrolled and it is communicated in a spontaneous form.
According to this, the blog is an example of verbal, informal communication.