A snuffbox was something common and very bad as far as habits go. Consider it like smoking in a nice brand new car.
Answer:
The experience of war
Explanation:
The passage was said during 1898 and during that time readers could relate that to what was going on then which was when the U.S declared war on Spain.
The right answer for the question that is being asked and shown above is that: "D. to help explain why John Hechtel became a biologist who studies bears" the author mention that John Hechtel saw a television show about bears when he was 13 years old because in order<span> to help explain why John Hechtel became a biologist who studies bears</span>
A transitional topic sentence is most often implied, although of course it should be noted that this is not always the case, and that it varies greatly with the speaker.