NEED ANSWER ASAP
Which sentence from the passage is in passive voice? 
 A)“That morning, he had walked across the road from the farmhouse where he was staying.” 
 B) “There was a stone wall with a small green gate, which he passed through.”  
C) “Zakir was welcomed by a crowd of butterflies.” 
 D) “On the other side was a wide field of wildflowers.”