Final answer:
Marley's highest score was 25 points and the range of her scores was 17. We can then check the answer choices to identify the score that could not have been one of Marley's scores which is 80
Step-by-step explanation:
The highest score that Marley achieved was 25 points.
The range of her scores was 17, which means that the difference between the highest and the lowest score was 17.
Since Marley scored a total of 100 points in 10 rounds of the game, her average score per round is 10.
In order to find the lowest score, we can subtract the highest score and the range from the total points: 100 - 25 - 17 = 58. Therefore, the lowest score possible is 58.
Now let's check the answer choices to identify the score that Marley could not have achieved:
a) 10 - This is a possible score since it equals the average score per round.
b) 23 - This is a possible score since it falls within the range of Marley's scores.
c) 35 - This is a possible score since it is greater than the highest score.
d) 75 - This is a possible score since it is within the range of Marley's scores.
e) 80 - This is the score that Marley could not have achieved because it is greater than the total points in the game.
Therefore, 80 could not have been one of Marley's scores.