The one that sounds like itd make sense is D
Line graphs are best for changes during a period of time.
Bar graphs are best for comparing stuff
Pie charts are best to show the division between certain things
Pictographs are best to show amounts.
The best would be: pie chart.
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.