Which statement best explains the meanings of the related words in the paragraph?

sandra was frying fish for dinner. the diffusion of the smell of the fish filled the house and was overpowering. sandra opened windows in the kitchen and living room. she hoped the circulation of fresh air throughout the house would dissipate the fish odor.

a.
the words tell that sandra opened the windows for fresh air.

b.
the words explain that fried fish has a strong, smelly odor.

c.
the words tell how the fish smell was removed from the house.

d.
the words explain why sandra was frying fish.