There must be signal to enter + give way to vehicles on the road + if there is an accelerating lane, you must run in that lane first.
Answer 2 is incorrect because it is not eligible safe.
Must signal to enter and must give way to vehicles on the road; when it is safe for vehicles to merge into traffic in the lane adjacent to the outer edge.
Must have signal and speed on highway.
If there is an acceleration lane, the vehicle must be driven in that lane before entering the expressway lane.