One such situation in which compulsion might be implicit is if someone is in need or rescuing, since although they could be "forced" to be rescued, it can be assumed that they would want to be rescued anyway.
They should be allowed, but if they do, they have to prepare for people not wanting to buy it in stores.
Hi
The answer you are looking for is option C, That the water in canyon streams was first snow in the mountains.
Hope this helps
If you are asking for the definition it is "<span>the study of the origin of words and the way in which their meanings have changed throughout history</span>" if not the please explain the question more
