Which of the following sentences does not use a semicolon correctly?

a) Chickens are the closest descendants of the Tyrannosaurus Rex; their evolution is a strange and fascinating story.

b) Chickens enjoy sunbathing; and also dustbathing, which they do to maintain healthy feathers.

c) Chickens have complex social structures, and they know who is the boss; every chicken in the flock knows their place on the social ladder.

d) Just like humans, chickens dream; they even experience REM sleep, just like we do.

b) Chickens enjoy sunbathing; and also dustbathing, which they do to maintain healthy feathers.