Originally presented in a two-act format with spoken dialogue, Smetana’s opera The Bartered Bride was not immediately successful, although gaining popularity after numerous revisions.
A) successful, although gaining popularity after numerous revisions
B) successful; although gaining in popularity after numerous revisions
C) successful, although it had gained popularity after numerous revisions
D) successful, although it did gain popularity after numerous revisions
E) successful, although they gained popularity after numerous revisions
A. The sentence following although has to be a dependent clause. Moreover gaining is progressive continous tense, but the original sentence is in simple past tense.
B. This choice repeats all the error of choice A. Moreover gaining in popularity is idiomatically incorrect as well.
C. It had gained popularity is past perfect which is incorrect in the context. The sentence already clearly mentions that it gained popularity after revisions. The past perfect suggests it gained popularity before the revisions. Illogical.
D. Correct
E. Pronoun error. They cannot refer to the opera.
D is correct
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