Answer:
C.how to tell whether the test was accurate
Explanation:
This is because, after the test, Safiya's brother should be able to check if the test carried out was accurate and not wrong as directed.
This could be done through series of validation technique rather than assuming that the test carried out was correct.
Answer:
"Strike matches on rough surface found on the outside of the box. Do not touch flame, the head of the match, and please keep away from children"
Explanation:
The first two sentences feel like common sense, so I would not include them. The middle sentence is descriptive and I would keep it. The last three sentences can be combined to make the sentence less wordy and read easier. Hope that helps somewhat!
we wouldn't know how to help with that, the best i can say it wipe.
