"He exercised while I watch television." because the tenses of the verbs don't match--"exercised" is past tense and "watch" is present.
B. News production is much faster in the digital age.
Hope that helps!
What is the main character of the story trying to accomplish or what is their main goal?
What is being said about the person, thing, or idea (the topic)?
What is the writer trying to say?
What is the most important point the author wants me to understand about the topic?
Is there a topic sentence?
I believe this is an example of either situational or dramatic irony,