The correct answer is "letter c.These are often narrow, two-lane roads with no physical barrier separating oncoming traffic."
In rural provinces or places, there are less developments done in their roads, since the people living in rural areas, they seldom use cars. Which is why roads are less developed, which is why driving on rural roads are considered to be dangerous and the driver should always be cautious with his or her surroundings, because the rural road are different from the urban ones.
