The word that comes in the blank is "behaviorism".
Behaviorism refers to a learning theory that exclusively spotlights on equitably behaviors that are observable and rebates any free exercises of the psyche or mind. Behavior scholars characterize learning as just the securing of new conduct in view of ecological conditions.
The answer is it allowed people to work further away.
That would be C. Arizona.
An armor-piercing bomb sliced through the forward deck of the USS Arizona, setting off more than 500 tons of gunpowder. The huge explosion and resulting fire sank the battleship in nine minutes, killing 1,177 men.
