On which part of the lane do motorcyclists often travel?

• The left portion of their lane
  Explanation:

  "Motorcycle riders often travel in the left portion of their lane because it provides better visibility, allows them to avoid road debris, and makes them more noticeable to other drivers. This positioning also helps them maintain a safe distance from vehicles that might enter their lane."
• The right portion of their lane
• The centre portion of their lane
• They can drive anywhere they want.