Explanation:
by participating and to be alert all the time
They traded with them selves.
Their civilization has never paused, or changed. They still have their old cultures (sort of) They still have the same language.
1) separate yourself in a field of candidates
2) delivering presentations
3) being the best man in a wedding or giving a eulogy
Answer: <u><em>life</em></u>
--- No explanation necessary ---
It appears that she already has anxiety so she could be at a greater risk of developing depression or other panic related disorders (e.g agoraphobia)