The answer is traffic flow. 
An ordinary hindering traffic law says: No individual should drive upon an interstate at such an ease back speed as to obstruct or hinder the typical and sensible development of the movement, aside from when decreased speed is essential for a safe task, on account of a review, or consistence with the law.
        
             
        
        
        
The correct answer is: "semantic encoding". 
In general, encoding techniques are applied in order to elaborate on the information perceived by our senses, seeking to appropiately store it in our longer lasting memory units and to optimize subsequent retrieval. 
Semantic encoding consists on relating certain concepts to a context in order to remember them better afterwards, using mechanisms such as chunking or mnemonics. This is the case in the research described where, in order to remember a list of objects, participants connect them to a house context. 
 
        
                    
             
        
        
        
Answer:
 D. Humankind spread to inhabit all parts of the globe.
Explanation:
Paleolithic humans were nomads, so they moved from place to place when they were running out of food. This led to a big spread of humankind from Africa to Eurasia, the Southeast region of Asia, and Australia. Afterward, they started inhabiting Europe to finally reach America from North to South.
 
        
             
        
        
        
Answer:
"industry vs. inferiority" stage
Explanation:
Erik Erikson proposed a theory about social and emotional development along people's lifespan. According to him, people go through different stages in life that are manifested as "crisis" where two different options present to the people and they create anxiety. Eventually, the person is inclined towards one of the two options available and solves the crisis and moves on to the next stage.
Erikson's fourth psychosocial crisis, is called "industry vs. inferiority" occurs between the ages of five and twelve.
During this stage, the child feels the need to win approval by demonstrating specific competencies that are valued by society and begin to develop a sense of pride in their accomplishments. When they are reinforced for their initiative they will feel industrious (competent) and confident in their ability to achieve goals. If they are not reinforced, they might feel inferior, doubting their own abilities and not reaching their full potential and can develop a feeling of inferiority. 
Sammy is in third grade, so he must be around <u>9 years old,</u> he won the spelling bee and felt proud about it since <u>he demonstrated a specific competency </u>in his school (thus he felt competent), however, <u>when he couldn't complete his arithmetic assignment he felt incompetent </u>(this could case him feelings of inferiority or doubt of his own abilities).
We can see how Sammy is in the "industry vs. inferiority" stage where he's looking to be competent and developing a sense of pride in his accomplishments. 
 
        
                    
             
        
        
        
Answer:
When Bolt was younger, he trained against other great runners, comparing his training program and performance to theirs.
Explanation:
Benchmarking consists in comparing a company's business practices with those of a top performing in the sector.
For example, a social media start up would could engange in benchmarking by comparing its practices to those of industry giants, in order to find out what it can do better according to what the giants do.
In the answer above we have an example of benchmarking, in the field of athletics. Young Bolt compared his running practice to those who were better than him, and he adapted his style in order to be more like them. This is a classical example of benchmarking.