Errors:
1. "as well as" and "and" are Parallelism Markers.
In option A... "a critique... as well as a vision of ..." both are parallel. No issue..
In option B... "a critique of ... and also his envisioning of ..." one is Noun and later one is complex gerund. SO both can not be parallel. Also "a critique of..." modify "essay on heat and light". therefore "his envisioning of a new chemistry" should also modify "essay
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1. "as well as" and "and" are Parallelism Markers.
In option A... "a critique... as well as a vision of ..." both are parallel. No issue..
In option B... "a critique of ... and also his envisioning of ..." one is Noun and later one is complex gerund. SO both can not be parallel. Also "a critique of..." modify "essay on heat and light". therefore "his envisioning of a new chemistry" should also modify "essay
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