Answer:
True.
Step-by-step explanation:
William Shakespeare's "Hamlet" tells the story of the ghost of the former king helped/ led his son to take revenge for his death. The son Hamlet took revenge against his uncle but which also ended tragically for him too.
In Act I scene iii, we see the characters of Ophelia and her brother Leartes in conversation, later joined by their father Polonius. Leartes is going on a journey, so they are bidding farewell to them, with their father giving him so advice and Leartes also giving some advice to his sister. But there is no mention of their mother, nor is there any referencing to her being present there. So, it is true that Ophelia's mother is not present in the scene in Act I scene iii.