The correct answer to your question is the 1st option or option A. (emptiness)
Answer:
Yes, maybe compare capitals or large cities. You still want to have enough information findable, but Australia and England are both very large, and I consider it too broad.
The store display rotates 40 times every half hour meaning that it will rotate 80 times every hour. To find how many times it will rotate in 4 hours, you can do 80 times 4. This is 320 rotations.
Also, please try and correctly list your question as this does not pertain to this subject.
The correct answer would be B.
