Final answer:
A solid yellow line on the road indicates maximum or special restrictions, such as no passing zones. A double solid yellow line means that vehicles in both directions are not allowed to cross the lines to pass.
Step-by-step explanation:
The line that indicates maximum or special restrictions is A) Solid yellow line. This type of line on a road indicates that passing is not allowed and is used to signify that there are restrictions on how drivers can use that lane of traffic. For example, a solid yellow line on one side of a lane means that traffic on that side cannot cross the line to pass; this is often seen on two-lane roads with opposing traffic flow. A double solid yellow line means that vehicles in both directions are not allowed to cross the lines to pass.