GMAT Sentence Correction (SC) | Re: Japanese researchers are producing a series of robots that

Japanese researchers are producing a series of robots that can identify human facialexpressions, to which they will then respond; their goal is primarily creating a robot that will empathize with us.

Issues:Parallelism | Modifier | Pronoun

Analysis:

1. The sentence connects two independent clauses
2. The original sentence has issue with pronoun ambiguity with "they" and "their" and the form of the verb "create"

I have highlighted the issues below:

(A) expressions,
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