A participle has the form of verb + -ing. So the only such word here is 'smiling' that is the participle in this sentence. It modifies 'woman', that is, it refers to how the woman opened the door - smiling pleasantly.
"the occasional scratch of her pen exerted just enough pressure to keep away the frightening shadows, the sad spirits from long ago, locked into events that couldn't change."
hope this help
Thinking that the bold word would be "grew" i think it would be C.helping
State the main idea of the entire article, what were they trying to convey?<span />