Step 1: Understanding the Concept:
Sheep require routine management activities.
Dipping and shearing are important practices.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the frequency of sheep management practices.
Step 3: Detailed Explanation:
Dipping is done to control external parasites.
Shearing is done to harvest wool.
Both are generally carried out twice a year.
The timing depends on the region and climate.
Thus, they are done twice a year.
Step 4: Final Answer:
Dipping and shearing are generally carried out twice a year.
Hence, the correct option is (B).