Final answer:
Meg screams for her mother when the man with red eyes tries to control their minds, seeking the safety and love her mother represents.
Step-by-step explanation:
When faced with the man with red eyes trying to control their minds, Meg, a character from 'A Wrinkle in Time', screams for her mother. She does this as a desperate plea for comfort and help in a moment of intense fear and helplessness. Her mother represents safety and a strong emotional anchor, serving as a symbol of love and protection for her children.