Explanation

The phrase “He is blind in one eye” means that someone cannot see with one of their eyes. When we talk about someone being “blind in” a particular body part, we use the preposition “in” to indicate the location or condition. So, in this case, “blind in one eye” is the correct expression. A. “Blind in one eye” – This option is correct. It indicates that someone lacks vision in one of their eyes. B. “Blind of one eye” – This construction is grammatically incorrect. We don’t use “of” in this context to indicate blindness in a specific body part. C. “Blind to one eye” – This construction doesn’t convey the intended meaning. “Blind to” typically means unaware or indifferent to something, rather than lacking vision in a particular eye. D. “Blind with one eye” – This option is also grammatically incorrect. “With” is not the appropriate preposition to indicate blindness in one eye. So, option A, “blind in one eye,” is the correct choice