What are you signaling to the drivers behind you when you flash your brake lights?

Explanation:

Trouble Ahead. The size of your vehicle may make it hard for drivers behind you to see hazards ahead. If you see a hazard that will require slowing down, warn the drivers behind by flashing your brake lights. ... Drivers often do not realize how fast they are catching up to a slow vehicle until they are very close.

c is the answer for this

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;