What does scale mean in the sentence

How does frost use ambiguity to present his message about walls and neighbours what evidence supports the idea that the speaker believes good fences make good neighbors what details suggest the opposite

What is the best way to manage oil transport on waterways? a. prevent oil spills and regulate the amount of oil that can be shipped at one time.b. use a skimmer, containment boom or chemical dispersant to clean up spilled oil.c. burn off oil spills from the water's surface when they occur.

Why did the author of "how to jump-start a car battery" choose to use this image?