Answer the following question given this paragraph: 

The most noticeable magnetic activity of the Sun is the appearance of sunspots. Sunspots are cooler, darker areas on the Sun’s surface ( Figure below ). Sunspots occur in an 11-year cycle. The number of sunspots begins at a minimum. The number gradually increases to the maximum. Then the number returns to a minimum again.


Q: What is the year cycle that sunspots occur?

 Choices:

- 12

- 15

- 22

- 11

A:
11
