B b B BB Bb
b Bb bb

B = brown eyes b = blue eyes

According to the Punnett Square shown above
A.
there is a 75% probability that an offspring will have blue eyes and a 25% probability that an offspring will have brown eyes.

B.
there is a 75% probability that an offspring will have brown eyes and a 25% probability that an offspring will have blue eyes.

C.
there is a 50% probability that an offspring will have brown eyes and a 50% probability that an offspring will have blue eyes.

D.
there is a 100% probability that an offspring will have one brown eye and one blue eye.