9514 1404 393
Answer:
C. 168
Explanation:
One of the more useful approaches to multiple choice problems is eliminating the answers that don't make any sense.
You know a square has internal angles of 90 degrees, and that polygons with more sides have larger angles. No internal angle can be more than 180 degrees in a regular polygon. The only answer choice in this range is the correct one:
C. 168