Correct Answer: C.
A hypothesis must have a clear prediction along with a rationale for that prediction. This can written in the "If...then...because..." format. For instance, a good hypothesis could be "if the temperature rises above 100°C then the water will boil because water's boiling point is 100°C.
The whole point of the experiment then is to test the hypothesis. By the end of the experiment there will either be supportive evidence for the hypothesis or a lack thereof. Either way, it was a testable hypothesis.
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Answer:
D
Explanation:
Stem cells transplanted into the facial tissue of two people with Parkinson’s disease led to sustained reductions in motor and non-motor symptoms, lower medication doses, and a better quality of life, a case study reported.
To observe the substance and figure it out
