Which of the following choices is a run-on sentence? A.
Cell phone use has drastically changed in the past 10 years.

B.
Cell phone use has changed mostly for children.

C.
Cell phone use has changed drastically in the past 10 years more children than ever use them.

D.
Cell phone use has changed drastically in the past 10 years, especially for children.

C.

Explanation:

A run-on sentence occurs when two or more independent clauses (also known as complete sentences) are connected improperly. Example: I love to write papers I would write one every day if I had the time. A comma splice occurs when two independent clauses are joined with just a comma.

the narrator is saying that the old lady made her feel uncomfortable. you know this because they say "i found that rather irksome", "perhaps it was her being so upright and trim", and "i don't think it was that, because i thought that quaintly pleasant." hope this !