I believe the answer is D. Im not 100% but i hope this helps
Answer:
Expressive
Explanation:
The tenor, mode, and field of discourse are three parameters related to the meaning "EXPRESSIVE."
The above statement is true because all the three attributes of discourse, when combined, allow people to express themselves effectively. The three attributes are expressive in the sense that they define entirely the situational context of the message that is being passed in clear terms whether spoken or written.
Answer: A layer of water in which there is a rapid change in temperature in the vertical dimension.
B. to explain something
Because he explains about Flamenco dance.