Answer:
1. She uses the disguise of Odysseus’s old friend Mentes
2. She is disguised as Mentor, another old friend of Odysseus
3. She disguises as Telemachus himself
From the book Odyssey, Minerva helps Telemachus, King Odysseus' son in different ways using several disguises to achieve her aim.
First, she disguised as Odysseus' old friend Mentes to tell him that his father is not alive, that he shouldn't give up hope. She further instructed him to call together the suitors for his mother and send them out of the house. Finally, she asks him to make a journey from Pylos to Sparta where he must find out news about his father.
The next disguise she assumed was as Mentor, another old friend of Odysseus and she made her appearance just as he was preparing to make his journey from Pylos to Sparta. She tells him that his journey would be fruitful.
She then takes on the disguise of Telemachus himself and went to assemble a crew for his ship for the voyage.
The disguises were effective and changed the story because the Minerva helped him by giving him hope about his father, instructing him to send the suitors away from the house, and giving him directions on where to go ask about his father.
*Minerva is the Roman name for the Greek goddess Athena.