For this case we have the following expression:
They are thin and have long hair. ____________________ eyes are brown.
What we must do for this case is fill in the blank space with the correct possessive pronoun.
For the third person, the correct possessive pronoun is:
their = sus
Therefore, the complete sentence in English is:
They are thin and have long hair. Their eyes are brown.
The translation of the prayer in Spanish is:
Son delgadas y tienen el pelo largo. Sus ojos son de color café.
Answer:
d. Sus