The statement best describes evidence that Group 3’s data are less valid than the data for the other two groups is Group 3’s pH value for vinegar is much higher than the values of the other two groups.
The correct option is B.
The meaning of pH is potential hydrogen. PH value tells us if the solution is acidic or basic.
pH value of 7 is considered as neutral which is of water.
The acidic solution comes below 7 and basic solutions come above 7.
Vinegar's pH value is 2.8, and it is acidic in nature, but group 3 result shows the value of pH 8.2 which is basic and wrong.
Thus, the correct option is b, Group 3’s pH value for vinegar is much higher than the values of the other two groups.
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