The author uses the word “only” in line 23 most likely in order to
(A) highlight the oddity of the service improvement
(B) emphasize the relatively low value of the investment in service improvement
(C) distinguish the primary attribute of the service improvement from secondary attributes
(D) single out a certain merit of the service improvement from other merits
(E) point out the limited duration of the actual service improvement
First of, you will notice that when the author mentioned the ONLY MERIT comment, he/she was explaining why the approach failed and that the author should have considered factors such as: (1) Will it attract new customers? and (2) Will it be easily imitated by competitors? Then sarcastically goes to say its only merit. To me, it conveyed a meaning that the author finds little value to the approach sought by the failed bank approach.
A. It's not odd.
B. This is the answer:
C. There are not primary/ secondary attributes discussed.
D. This is a trap. It did mention that but its for the purpose that when linked to the previous sentences show how little the approach has accomplished. B is better.
E. No such duration mentioned.
By tone and by structure, the author is pointing out how little helpful the approach was.
Impossible is nothing to God.