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:
Yes.
Explanation:
Depending on what they post, whether it provocative, rude, or inappropriate. It doesn't matter if you delete the post, what you put on social media/the internet is on their forever.
Answer:
the same time as the best price
Answer:
Early Bird catches the worm.
Explanation:
Because it means the one that arrives first has the best chance for success.