Answer: Your question is incomplete. I will assume that below is your complete question.
Which of the following below is the best form of referencing a book in your reference page, using the American meteorological society (AMS) style.
A. American's attitudes toward wilderness, like the wild lands themselves, are constantly changing (Nash).
B. American's attitudes toward wilderness, like the wild lands themselves, are constantly changing (Nash, 2014).
C. American's attitudes toward wilderness, like the wild lands themselves, are constantly changing (Roderick Nash).
D. American's attitudes toward wilderness, like the wild lands themselves, are constantly changing (Nash 2014).
THE ANSWER IS B
American's attitude toward wilderness, like the wild lands themselves, are constantly changing (Nash, 2014)
Explanation: using AMS style of referencing a book the authors first name comes first and initial of the last name follows ( optional) then a comma sign, before the year of publication. All this details about the authors should be inside a bracket
