Hi Folks,
Here comes the detailed explanation for this exercise question:
Although
Google has launched ‘unchic’ glasses with a computer processor, a battery, and a tiny screen, providing Internet access through wearable technology, it has approached Warby Parker, an e-commerce eyeglass company, to help it design more fashionable frames.
Meaning Analysis• This sentence presents contrast.
• Google has launched glasses – wearable technology that provides internet access
o These glasses contain a computer processor, a battery, and a tiny screen.
o These glasses are not very attractive
• Even though Google has LAUNCHED these glasses, it has approached Warby Parker so that Warby Parker can help it design more fashionable frames.
o Warby Parker is an online eyeglass company.
Errors in Original Sentence• Clause 1: Although Google has launched ‘unchic’ glasses with a computer processor, a battery, and a tiny screen, providing Internet access through wearable technology,
• Clause 2: it has approached Warby Parker, an e-commerce eyeglass company, to help it design more fashionable frames.
1. All the S-V pairs are accounted for.
2. All the verbs are written correctly in present perfect tense.
3. The pronoun reference is correct.
4. The use of comma + verbing modifier “providing…” and other modifiers is correct.
5. There are no errors in the sentence.
Answer Choice AnalysisA. Google has launched ‘unchic’ glasses with a computer processor, a battery, and a tiny screen to provide Internet access through wearable technology, it has approached Warby Parker:
Correct Choice.
B. ‘unchic’ glasses have been launched with a computer processor, a battery, and a tiny screen, Google has provided Internet access through wearable technology and has approached Warby Parker :
IncorrectError 1 – The verb of Clause 1 has been turned into a passive voice. With this change in voice, now the choice fails to say WHO has lunched the glasses.
Error 2 – Per the original sentence, the contrast is – Although Google has launched glasses, it has approached WP to help it design better frames. Per this choice, the contrast is – Although unchic glasses have been launched, Google has provided Internet access through wearable technology. This contrast is illogical. Actually by launching those glasses, Google has provided Internet access. This choice has converted logical information into illogical contrasting information.
C. ‘unchic’ glasses that have a computer processor, a battery, and a tiny screen have been launched by Google to provide Internet access through wearable technology, Warby Parker has been approached:
Incorrect.Error - Because of change in voice, this choice now fails to convey that Google approached WB, as communicated in the original sentence.
D. Google, launching ‘unchic’ glasses with a computer processor, a battery, and a tiny screen, has provided Internet access through wearable technology and has approached Warby Parker:
Incorrect.Error – Per this choice, there is no IC in the sentence. The contrasting information is missing here.
E. Google has launched ‘unchic’ glasses that have a computer processor, a battery, and a tiny screen to provide Internet access through wearable technology, Warby Parker has been approached:
Incorrect.Error - The passive voice construction fails to convey the entity that has approached WP.
Takeaways1. The correct answer choice must contain all the information presented in the original sentence.
2. The sentence must have an IC.
3. The contrasting elements must be grammatical and logical.
Hope this helps.

Thanks.
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