Question

should you drive slower than other traffic that is traveling within the speed limit?
yes. it makes the other traffic drive slower, too
no. you can block traffic when you drive too slowly
yes. it is safer than driving too fast
yes, provided you are not driving in the far left lane

Explanation:

Driving too slowly can cause traffic congestion as it blocks the flow of other vehicles. While safety is important, maintaining a speed that is too far below the normal traffic flow (even if within the speed limit) can disrupt the overall traffic movement. The first option's reasoning is incorrect as driving slower doesn't necessarily make others drive slower in a positive way - it can cause frustration and unsafe lane - changing maneuvers. The third option is too simplistic as safety isn't just about speed comparison (slow vs fast). The fourth option still has the issue that even in non - far left lanes, driving too slow can cause problems. The second option correctly points out the traffic - blocking consequence of driving too slowly.

Answer:

No. You can block traffic when you drive too slowly