Answer:
Inform
Explanation:
The author's purpose is to inform the reader about herpetology as they give information about the field of study
The connection used is D. Analogy
Answer:
It appears that the author has intended to illustrate how it was back then compared to the present. The author appears to be implying that military service has lessened over time. However I do not know which essay you are reading from (you have not mentioned the name) so I am not entirely sure.