Answer:
Uh, i think its c? Please, wait until someone who actually knows to confirm
Explanation:
Skeletal muscle<span> is </span>most often controlled by conscious thought<span>. The brain sends signals to your nerve endings that tells the skeletal muscles to move</span>
Hey There!
Here is your answer:
Your answer is that a experiments should be controlled because the experiment could go out of control which could harm or hurt someone.
Also the definition of a controlled experiment is a part of the experiment that's not touched.
Ex: Water is your controlled experiment that's because our not doing anything to the water.
If you need anymore help just ask me!
Hope this helps!
