Answer:
Muscle rigidity, also known as muscle tension, rigor, or stiffness, is one of the most common causes of muscle pain. It's characterized by the inability of the muscles to relax normally. The condition can affect any of the muscles in the body, causing sharp pain that makes it difficult to move.
Explanation:
Electrical and chemical signals
The entry, establishment, and multiplication of a pathogen is infection. <span />
It has to do with how the animal and plant inter tact
I would say the third answer is right
