According to the Scientific Method, in order to make a controlled experiment you NEED to have an hypothesis.
A controlled experiment consists of a test done by a scientist in which only one or a few variables are changed while the others remain constant in order to prove or disprove a hypothesis. This hypothesis is key to said experiment because it provides the starting point from which the professional can begin the procedure, as it helps focus on the subject that one is trying to get results from. Without a clear hypothesis, the outcome of the experimentation will not be valid nor specific.
There are basically two steps that go in a cycle. Old words from the English language are taken, and they are changed in how they sound and what they mean, making a slang, sometimes slowly sometimes quickly the slang terms become excepted as words by society and eventually they become the words being changed. If you think about it the language changes based on what we find to be the way the popular people talk. In the past it was the rich or the actors/esses in plays that started a change in culture, now it are the musicians and actors/esses. That is what I think about it, there are probably more ways of explaining it, if I even answered that the way you wanted.
Answer:
I think D. That or it's C.
Explanation:
His father nods but clenches his fist which means he's not happy with the trial but he's trying. His mother also forces a smile. I think it's D because, though his parents may not like it, they are trying.
I hope this helps!
Answer:
The windows are barred ... and there are rings and things in the walls
Explanation: The other options were incorrect.