The answer should be D because it is stating something happy/nice at the beginning, but then it goes into the downside of the experiments. Which means you need a negative transition word
Answer:
the physical environment where the story takes place
the time period during which the events occur
Explanation:
"response variable", "regressand", "predicted variable", "measured variable", "explained variable", "experimental variable", "responding variable", "outcome variable", "output variable" or "label".
it all depends on the context :)
What happen is that the whole answer?
