Hi, thank you for posting your question here at Brainly.
Let's characterize each chart first.
Flow chart - chart that displays a flow process through shapes like diamonds and boxes connected by arrows
Pie chart - chart that displays distribution of parts from a whole
Bar chart - this chart presents grouped data through rectangle blocks
Organizational chart - this chart shows the hierarchy of an organization and their relations
Hence, the answer must be flow chart. The answer is letter A.
        
                    
             
        
        
        
Maybe by alerting the driver when they get distracted, like a sensor of some sort :)
        
             
        
        
        
The sentence from the introduction paragraph that serves as the author's thesis is: "<em>Yet key technological developments caused a rapid growth in American urban areas</em>."
A thesis statement is, by definition, the sentence that captures the main idea and your point of view on it on your article. 
The sentence that I believe best represents what the author meant to present to the readers is one that briefly explains his view on the topic mentioned in the title, which is the positive effect of technological advancements on a city's growth.
 
        
             
        
        
        
Answer:
To provide explanation and analysis of evidence.
Explanation:
A commentary is a detailed explanation from the author's side, the expression of his/her opinions about whatever is being discussed or referred to. In other words, we can say that a commentary is when an author provides an explanation about the events or a situation.
One of the primary reasons why writers use commentaries is to provide explanations and also their analysis of evidence that's been provided or given. This allows the writer a chance to express his/her opinions about that particular point or the point made or argued about in a text.
Thus, the correct answer is the first option.