How many Chileans live in the Santiago metropolitan region?.

1. b) Head restraints

2. b) False

3. c) Be decreased

4. Headlights

Explanation:

1. Head restraints: are used as a means for providing head and neck protection to an automobile car driver in the event of a vehicle collision.

2. False: changes in visibility usually have no impact on the way that the Identify, Predict, Decide, and Execute (IPDE) process is used. Actually, changes in the level of visibility at a particular point in time usually have an effect on the IPDE driving process, which are principles that pertains to defensive driving and the complexities of visibility in traffic.

3. When using headlights, speed should: be decreased. This is the recommended and advisable thing for all drivers to do because excessive speeding at night might lead to a car accident or road traffic crash.

4. Headlights: improve a driver's ability to identify hazards and conditions in the driving environment and even act as a warning to fellow drivers in certain situations.