Tabitha wears glasses, and Adrienne does not. Tabitha can see clearly with her glasses on, but not when she takes them off. Adrienne can see clearly without glasses, but when she puts on Tabitha's glasses, she cannot see anything clearly.

Which of the following is a good scientific explanation for how glasses affect Tabitha and Adrienne's vision?
A.
Tabitha likes glasses, but Adrienne does not.
B.
Glasses change the way light is focused in the eyes.
C.
Glasses always improve a person's vision.
D.
Adrienne's eyes focus light, but Tabitha's eyes do not.