Final answer:
In the letters Lodovico brings from Venice to Othello, it is not mentioned that Desdemona's father has taken to his death bed; thus, option 3 is the correct answer to what is NOT included in the letters.
Step-by-step explanation:
The student is asking about the contents of the letters brought to Othello by Lodovico in Shakespeare's play Othello.
The letters conveyed two key updates: that Cassio is to take Othello's place in Cyprus, and that Othello is to return to Venice.
It is not mentioned in the letters that Desdemona's father has taken to his death bed.
Therefore, the correct answer is option 3, that Desdemona's father has taken to his death bed is NOT something mentioned in the letters.