In low gear from the bottom of the slope + to the top of the slope, you must slow down to observe
Answer 1 is wrong because you do not go to the low gear from the bottom of the slope + to the top of the slope, you must increase the throttle
Adjusting the throttle for the car to slowly go uphill; to near the top of the slope must increase the throttle so that the car can quickly cross the slope; to low gear, go close to the right side of the road, there is a signal (horn, light) to warn let the driver going in the opposite direction know.
In low gear from the bottom of the slope, adjust the throttle for the car to slowly go uphill; to near the top of the slope must go slowly, go close to the right side of the road, have signals (horns, lights) to tell the driver to go opposite direction know.