Which of the following is a sentence fragment?

 A.Caffeine is a stimulant children should avoid. 
B.He simply refuses.C.Could both sides be correct? 
D.Running through the hills.

Respuesta :

your answer is Running through the hills.  It has no subject.  
Who is running through the hills?

answer is D.
Nouri
The sentence fragment is...

D. Running through the hills.