Answer:
The tension that the flashback revealed in the above excerpt is that:
C. the mom blamed herself for saving one daughter, but not both.
Step-by-step explanation:
The mother was very happy on the arrival of her younger daughter Dee. While being happy, she went to the flashback and remembered the day when the house went under the havoc of fire. She felt tension from the flashback as she was afraid that after meeting Dee, Maggie would feel insecure about herself.