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Megan's science teacher gave each student in her class a 20.0 gram sample of sedimentary rock. Each student is required to verify the rock sample by taking four mass measurements. Which measurement is the most accurate of the four recorded?
A) 19.012 grams
B) 19.0122 grams
C) 19.02 grams
D) 19.12 grams

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ineedhelpfastplzzz
D. 19.12 because it the closest to 20.0 grams 

Answer: The correct answer is option D.

Step-by-step explanation:

We are given a sample of 20 gram of the sedimentary rock. the mass recorded by student 4 times is given as follows and we need to find the most accurate value amongst the given one.

Most accurate observation is defined as the observation which is closest to the theoretical value. From the given observations, the closest value to 20.0 gram is 19.12 grams.

Hence, the correct answer is option D.

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