When should you avoid lane sharing while riding your motorbike?

• When the weather is bad
• When you can’t maintain the posted speed limit of the road
• When you are driving too close to the right curb or edge of the roadway
• Both b and c
  Explanation:

  "Unless your vehicle cannot maintain the posted speed limit of the road and you are driving close to right curb or edge of the roadway, you should not share your lane with other vehicles."