The answer would be "D.Opening" because you are opening up a conversation
I believe the answer is: activation of large nerve fibers in your spinal cord
Gate control theory was popularized by Ronald Melzack and Patrick Wall, it views that non-painful area input closes the doors or "gates" to the painful area input, this exist in order to prevents pain sensation from coming through the central nervous system and being transferred across our body.
It depends on what you are speaking about. If you are talking about something that you want people to thoroughly understand then use a lot o body language. If you are talking about something that you know might have a weak side, then use less body language.
mix borax solution with batch of glue together with Ryan