Wasnt it because of a storm?
Answer: The last sentence.
Explanation: in the last sentence the pronoun is placed where it clearly states whom they are speaking of. The second sentence could also be an answer but since it is misspelled I advise to just select the last sentence.
Since the questions asks about when, you would expect that the supporting detail would contain a time or date. That sentence would be:
<span><em>It is believed that Boston terriers can be traced back to a dog named “Judge” who was sold to a man living in Boston named Hooper in 1870.</em>
Therefore, it happened in year 1870.</span>
i believe steadfast could be one and the other would be fearless.