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Using the latest technology and trendy designs, electronics companies develop one gadget after another as doing so can be extremely profitable.


A. Using the latest technology and trendy designs, electronics companies develop one gadget after another as doing so
No grammatically errors as seen in other choices (no dangling modifier error or misplaced pronoun problem). So the answer choice is A.

B. Using the latest technology and trendy designs, one gadget after another is developed by electronics companies as doing so
Dangling modifier, "Using trendy designs and the latest technology" should be immediately followed by the noun "electronic companies" and makes this choice grammatically incorrect. Eliminate


C. Using the latest technology and trendy designs, electronics companies develop one gadget after another as it
Pronoun, 'it', refers to the noun, 'Electronics companies' and makes the later part of the sentence incorrect. Note, the action(verb- developing gadgets) makes the companies profitable, not the companies themselves. Eliminate

D. Using trendy designs and the latest technology, one gadget after another is developed by electronics companies because doing so
Dangling modifier, "Using trendy designs and the latest technology" should be immediately followed by the noun "electronic companies" and makes this choice grammatically incorrect. Eliminate

E. Electronics companies, using the latest technology and trendy designs, develop one gadget after another because it
Pronoun, 'it', refers to the noun, 'Electronics companies' and makes the later part of the sentence incorrect. Note, the action(verb- developing gadgets) makes the companies profitable, not the companies themselves. Eliminate
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Correct Answer :

Original sentence :
Using the latest technology and trendy designs, electronics companies develop one gadget after another as doing so be extremely profitable.

Elimination Process :

1. One asking self, who are using ? The phrase "Using the latest technology and trendy designs", modify Electronics companies, Not the gadget, as it is a product, not the user or developer.
Eliminate : B, and D, Plus with D "doing so" and "because" has same meaning, makes it Redundancy

2. Though "Doing so" and "Because of" has same meaning, but there grammatical usage is different.
Doing so - means "as a X result of that action Y"
Because - it is a subcordinate conjunction, used between two sentence to show cause and effect of one to another, and "because of" is the correct phrase emphasis more on verb, and rarely with Noun.

With E - usage of "because" and pronoun "It" ambiguity - can be rejected.
With C - It has no verb correlation,
"it be extremely profitable" to "develop", with comparison indicator "as", we need a reason factor indicator, as "doing so" or something similar to.

A. Using the latest technology and trendy designs, electronics companies develop one gadget after another as doing so - Correct

B. Using the latest technology and trendy designs, one gadget after another is developed by electronics companies as doing so

C. Using the latest technology and trendy designs, electronics companies develop one gadget after another as it

D. Using trendy designs and the latest technology, one gadget after another is developed by electronics companies because doing so

E. Electronics companies, using the latest technology and trendy designs, develop one gadget after another because it

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