Final answer:
It is a good habit to always signal for lane changes to communicate your driving intentions, which increases road safety. Although signaling doesn't guarantee that others will let you merge, it is a crucial step in the process. Using the vehicle's electronic signals is generally preferable for visibility.
Step-by-step explanation:
The question posed revolves around the proper use of turn signals while driving. Among the options provided, the correct statement is that it is a good habit to always signal for lane changes. It is important to note that turn signals are crucial for communicating your intentions on the road to other drivers and pedestrians, which enhances safety for everyone involved.
Using turn signals is not just a courtesy, it is required by law in many areas. When you plan to make a lane change, signaling gives other drivers time to react and adjust their driving accordingly. However, it is important to remember that signaling does not automatically grant the right of way. Other drivers are not obliged to let you in just because you have your turn signal on.
While hand signals can be used in certain circumstances such as when turn signal lights are not functioning, it is generally preferable to use the vehicle's electronic signals as they are more visible and can be seen from a greater distance. Therefore, option A, which suggests never using both signals, isn't a hard and fast rule. It's typically not necessary to use both, but there might be exceptional circumstances where it could be beneficial.