If the underlined phrase is <em>having been warned by her mother, </em>then this is a nonessential perfect participial phrase.
Nonessential phrases are separated from the rest of the sentence by commas, and since this is a perfect participle, this is the only correct option.
Answer:
where are the statements?
Explanation:
A was the correct answer, hope this help :3
The one bellow is the one that is facts
Ok ok thanks for the ecall bye love wyeiwtw weee