Which writing mistake is demonstrated in the sentence below?

I have trouble concentrating sometimes. Especially when I can hear people talking.
a. run-on sentence
b. adverbial clause fragment
c. adjectival clause fragment
d. misplaced modifier ****

No. I think is an adverbial clause fragment.

Right

d. misplaced modifier

The writing mistake demonstrated in the sentence is d. misplaced modifier.

To identify and correct this mistake, we need to look for a phrase or clause that is describing or modifying the wrong part of the sentence. In this case, the phrase "Especially when I can hear people talking" is modifying the previous clause "I have trouble concentrating sometimes."

To fix this, we can move the phrase to a more appropriate position in the sentence. The revised sentence would be: "Especially when I can hear people talking, I have trouble concentrating sometimes."

By moving the modifying phrase to the beginning of the sentence, we create a clearer and more grammatically correct structure.