Answer:
when was the letter written
I would say flighty is the correct one<span />
Answer:
Okay everyone be safe and have a great day
Explanation:
The t-shirt that they give only to people who finish is a big reason that so many people take up the challenging race.
This paraphrase presents the same information as in the sentence, but since it should be a bit more of a summary, it takes out the specific detail of how many people actually run the race, which can just be paraphrased into 'so many'.