Cultural regions can be very diverse due to which of the following reasons? i. geographers can create regions that focus on one or more cultural elements. ii. the size of the regions are always the same no matter what cultural element is being examined. iii. regions are often fluid because they can change, new ones can be created, and some can disappear. a. i. and ii. b. i. and iii. c. ii. and iii. d. i., ii., and iii.