Choose the item that is an example of the geographic theme of place.

austin, texas, is 30 degrees north and 97 degrees west.
farmers settled in the fertile plains.
canada is north of the united states.
the school is fifteen minutes from the library.

The answer is: [B]:  Farmers settled in the fertile plains.

This refers to a "sense of place" ; or the theme of "place" in geography. 

The phrase, "fertile plains"; along with the fact that this was the place in which "farmers settles";  describes particular aspects, features, characteristics of place.

Note: The "5 (five) themes of geography" are: movement, region,
human-environment interactions, location (both absolute and relative); and place.  One mnemonic to remember this is: "MR. HELP".

Answer choice "A" is incorrect—since it is an example of location—specifically, 'absolute location' .

Answer choice "C" is incorrect—since it is an example of location—specifically, 'relative location' .

Answer choice: "D" is incorrect— this answer is vague ("15 minutes?" by means of what type of movement/transportation? Using what route?" Even with details provided, the answer would not be "place" — but likely location (specifically, relative location; or even movement).

Each side has to be less then the sum of the other two sides.a, b, c, and e work.