All drivers are responsible for:

Answer: D — All of the above

Drivers are responsible for recognizing road signs because they provide important information and warnings about the road ahead, such as speed limits, upcoming turns, and hazards. Not recognizing road signs can lead to dangerous situations and accidents. Obeying speed limits is also the responsibility of all drivers. Speed limits are set for the safety of drivers and others on the road, and ignoring or breaking them can result in traffic violations or accidents. While adjusting mirrors can enhance visibility while driving, it is not the only responsibility of drivers. Knowing and following traffic rules, driving attentively, and making safe and responsible decisions are also important responsibilities. Therefore, the correct answer is D because all of the mentioned responsibilities are crucial for safe and responsible driving.