C. shortened muscles. Without stretching muscles, they lose their flexibility, which also means that they lose length.
The answer is Compulsion disorder, hope this helps!
A good procedure is so detailed and complete that it lets someone else duplicate your experiment exactly. Repeating a science experiment is an important step to verify that your results are consistent and not just an accident. For a typical experiment, you should plan to repeat it at least three times (more is better).
No not that I know of your fine if it was just a regular tick
