Question

20. Which sentence contains an error in the use of end marks or commas?
We will be reading a novel written by Charles Dickens.
For a few foolish moments, I actually thought I could catch the falling vase.
On page 37 four charts, clearly, detail the results of this policy.
My brother was born on Friday, October 11, 2003, in Atlanta, Georgia.

Answer 1

The sentence that contains an error in the use of end marks or commas is On page 37 four charts, clearly, detail the results of this policy.
There shouldn't be a comma before clearly. 

Answer 2

Your answer is "On page 37, four charts clearly detail the results of this policy." WorldlyGlass is always right :)