Definition of perfect storm. : a critical or disastrous situation created by a powerful concurrence of factors.
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Answer:
B. Cause and effect
Explanation:
The given paragraph is structured as a <em>cause and effect</em> paragraph. This type of paragraph explains why something happens. The occurrence that takes place is defined as the effect and the thing that causes it is the cause.
Here, we have two groups of students who perceived the same lecture in two completely different ways. This is the effect. What caused this is the way the lecturer was introduced. The students' expectations (cause) affected their opinion on the lecture, the final result (effect).
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.
Under (on) what condition