Match the words given in List-I with the definitions from List-II:

List-I	List-II
(Words)	(Definitions)
(A) Ophthalmologist	(I) A dentist who treats problems related to teeth and jaws
(B) Cardiologist	(II) A doctor who studies and treats kidney diseases
(C) Nephrologist	(III) A doctor who studies and treats diseases of the heart
(D) Orthodontist	(IV) A doctor who studies and treats diseases of the eyes

Choose the correct answer from the options given below:

Option 1: (A) - (IV), (B) - (III), (C) - (II), (D) - (I) -> Correctly matches Ophthalmologist with eyes, Cardiologist with heart, Nephrologist with kidneys, and Orthodontist with teeth/jaws.

Option 2: (A) - (I), (B) - (III), (C) - (II), (D) - (IV) -> Incorrectly matches Ophthalmologist with dentistry and Orthodontist with eyes.

Option 3: (A) - (I), (B) - (II), (C) - (IV), (D) - (III) -> Incorrectly matches all specialists - confuses Ophthalmologist with dentistry, Cardiologist with kidneys, and Nephrologist with eyes.

Option 4: (A) - (III), (B) - (IV), (C) - (I), (D) - (II) -> Incorrectly matches Ophthalmologist with heart, Cardiologist with eyes, Nephrologist with dentistry, and Orthodontist with kidneys.

Hence, Option 1: (A) - (IV), (B) - (III), (C) - (II), (D) - (I) -> This correctly identifies that an Ophthalmologist treats eye diseases, a Cardiologist treats heart diseases, a Nephrologist treats kidney diseases, and an Orthodontist is a dental specialist who treats teeth and jaw alignment problems -> correct