Answer:
O should read "these, having"
Explanation:
In the given passage, the speaker's main point is to emphasize the negative impact of having telephones. While we generally only talk of its importance in our daily lives, we often see or find the negative impacts being talked about.
In the given italicized sentence <em>"In cases like these having a telephone is more of a curse than a blessing",</em> while the sentence is correct in the use of the words or spelling, there is one error that can be changed. It is the usage of the comma in between "these" and "having".
Thus, the correct answer is the second option.
