Our Premium and Ultimate plans guarantee up to 90+ points score increase or your money back.
We cover every section of the GMAT with in-depth lessons, 5000+ practice questions and realistic practice tests.
Study whenever and wherever you want with our iOS and Android mobile apps.
Adaptive learning technology focuses on your academic weaknesses.
The author mentions the word useful (marked in the passage) in order to
The author believes that making a distinction between synecdoche and metonymy is beneficial and adds precision to the interpretation of literary works, but does not go as far as to say it is necessary.
The word useful in this sentence does not refer to the use of literary devices in general, but to the differentiation between two particular literary devices.
The author claims that distinguishing between the two is needed for a more precise interpretation, but does not claim that not differentiating between these two devices is incorrect. It is merely useful. Therefore, we cannot say that in order to correctly interpret literary works, one must make this distinction.
Although the author suggests that one does not have to make this distinction, stating that it is useful to do so does not make the distinction between these two devices arbitrary, or random.
The word useful does not refer to either literary device but to making a differentiation between them.