Which relative sentence is correct?
a. My only sister, who has beautiful eyes, prepared the meal.
b. My only sister, whose has beautiful eyes, prepared the meal.
c. My only sister, has beautiful eyes, prepared the meal.
The correct sentence is:
a. My only sister, who has beautiful eyes, prepared the meal.
In this sentence, "who" is the appropriate relative pronoun to refer to "sister." The other options contain errors. Option b incorrectly uses "whose" instead of "who," and option c incorrectly places a comma before the relative clause.