Answer:
D Author's qualifications.
Explanation:
Everything else makes the source not credible except for D and E, but E isn't enough to make it credible so D is correct.
The answer is A. irony is defined as “a state of affairs or an event that seems deliberately contrary to what one expects and is often amusing as a result.” Therefore, a man whose marriage didn’t work out being a marriage therapist is ironic.
The answer is C. Use conversion rates to change one unit into the other unit, so that both prices are listed using like units.
You can't compare the two until they are the same units, so the other options don't work.
Answer: able to be explained or understood
Explanation:
the delayed introduction of characters' names is accountable, if we consider that names have a low priority.