If the writer is considering whether to delete or keep the phrase, the factor to consider would be: E. Whether the audience is likely to regard Frankenstein as a science fiction novel.
A science fiction novel can be described as a novel of speculative fiction genre that involves the futuristic and imaginative concepts about advances in science and technology.
If Frankenstein wasn't regarded as a science fiction novel, it would be wrong or misleading to state that many critics consider it as the first science fiction novel.
Therefore, if the writer is considering whether to delete or keep the phrase, the factor to consider would be: E. Whether the audience is likely to regard Frankenstein as a science fiction novel.
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