Answer:
B. There can be gravel or dust kicked back onto your windshield
Step-by-step explanation:
Gravel roads are unpaved roads covered with gravel, often encountered in rural areas. Regardless of whether the unpaved road is covered by dirt, mixed gravel, peat gravel or rock, driving on it represents a challenge for multiple reasons.
One of them is that gravel or dust can get kicked back onto your windshield and reduce your vision or even chip your windshield. It is particularly dangerous if the chip isn't treated in time and starts spreading, additionally worsening your view range.
Your tires are not at risk, and neither are your rear windows. The GPS network is not related to gravel roads in any way, so option C is incorrect.
Overall, the best way to prevent the damage to your vehicle is to slow down and be additionally careful about potholes, turns, and animals.