Which is a run-on sentence?

A.
Sunflowers are usually yellow, yet some are red or orange.

B.
Roses have sharp thorns, but they are beautiful just the same.

C.
African violets usually have purple flowers some have white ones.

D.
Acorns drop from oak trees, and they are a food source for squirrels.

Question

Which is a run-on sentence?	
 
 A.
Sunflowers are usually yellow, yet some are red or orange.
 
 B.
Roses have sharp thorns, but they are beautiful just the same.
 
 C.
African violets usually have purple flowers some have white ones.
 
 D.
Acorns drop from oak trees, and they are a food source for squirrels.

anonymous · Answer

C. African violets usually have purple flowers some have white ones.
It should be
African violets usually have purple flowers, and some have white ones.