Answer:
The correct answer is Africa.
Explanation:
Africa is the second largest continent in the world after Asia. Africa is the continent which has the most independent countries in the world. There are 54 independent countries in Africa. There are still two states whose independence is disputed. These states are Western Sahara and Somaliland. In Africa, Nigeria is the largest country of the continent land wise. Some of the main countries of Africa are, South Africa, Kenya, Algeria, Ghana, Morocco, etc.
The difference between the two mentioned magnitudes is 4.
A magnitude 1 earth-quack is 10000 times bigger than a magnitude -3 earth-quack. On the other hand, it is 1000000 times stronger in terms of energy release.
Note: To calculate the difference in energy between two earth-quacks, first you calculate the difference between their magnitudes and then you raise 10 to the output you obtain.
The answer is b. mountainous