Answer:
Hello Sophiya!!!!!!!!!!! hru?
The answer to you question is A
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.
Technically it is true that Frederick Scott Archer introduced the concept of combining artificial and natural light in the studio, but it should be noted that this concept had been used before, just without much fame.
Answer: C.
Explanation:
The colon is referred to as a punctuation mark that is made up of two dots that are placed above one another. A colon is normally used before a quotation, an explanation or a list.
Therefore, the sentences that used a colon correctly will be "We considered the following name for our cat: Smokey, Oscar, and Sock Thief".
Here, the colon is used before the list of the cats.
