Sentence Correction (SC) | Re: As a baby emerges from the darkness of the womb with a rudimentary sen

Option A: "As a baby emerges from the darkness of the womb with a rudimentary sense of vision, it would be rated about 20/500, or legally blind if it were an adult with such vision"

I was confused between A and D. I somehow felt that there is a meaning change in option D and chose the wrong answer A.

Is the ambiguous usage of "it" the only mistake in option A?


Pleaseclarify.