The answer is personification because personification means giving human-like qualities to non-human objects so the: Angry sky represents personification. Hope it helps!
In this case, <span>she was using what your textbook calls EXPERT TESTIMONY
Expert testimony is a testimony that came from someone that has a credential in that specific field.
Example of expert testimony: </span>social security commissioner giving testimony about <span>social security system, astrophysicist giving testimony about planet's orbital condition, Bill Gates giving testimony about the condition of software market, etc.</span>
I believe the answer is: Participant observation
Participant observation refers to a research technique in which the data is collected through direct observation and opinion that is made by the researchers. In general, this technique is used only if the research data is qualitative in nature rather than quantitative.