Answer: B) To muse.
Explanation: an infinitive verb is a verb with the word "to" in front of it, and that can act as a noun, an adjective or an adverb. When we use an infinitive verb, "to" is a part of the verb and not a preposition. In the given sentence, the example of infinitive is "to muse" because "muse" is a verb. The phrases "to town", "to college" and "to university" aren't infinitive because they are not verbs, they are prepositional phrases. 
 
        
                    
             
        
        
        
Answer: 
The main topic would be <em>the free enterprise system</em>
Explanation:
The free enterprise system is a type of economy used in capitalism where the market determines the price of the products and services and not the government, so each individual should be able to make their own economic decision without any problem or restriction. It's an economy where busiess are free from government control and the only thing that would determine their success or failure would be the supply and demand of the consumers.
So you would have to <em>choose and make some research about an entrepreneur </em>and explain if you think that this system helped that person to make an impact on the business world and what's your posture about it: do you think it works? do you think it's good? Bad? Does it help? Is it fair? Why?; all that using <em>arguments </em>acording to what the free enterprise system is.
 
        
                    
             
        
        
        
Answer:
Dolomite Sand is used for constructions it is harmful to your health
 
        
             
        
        
        
Answer:
C). The reason the issue is important.
Explanation:
Introduction is one of the most significant elements of an essay or research paper as it functions to grab the audience's attention by introducing the key subject matter(topic) and its scope to them and outlining the key ideas that are going to be discussed. 
It primarily consists of three elements: the opening statement(or the 'attention grabber') that reveals the topic in an appealing manner before the readers that captures their attention which is followed by <u>supporting details(lead-in sentence) that justifies that why the topic(issue or concern that is being discussed) is significant</u> and lastly, the thesis statement which declares the scope or purpose of the essay or work and key aspects that the author is going to focus upon. 
As per the question, after grabbing the attention from the opening statement, <u>the author needs to establish the credibility of his topic and build audience's trust</u>. Therefore, he brings in 'the reason why the issue is significant' as it functions to support the author's decision to select that specific topic and aspect. Hence, <u>option C</u> is the correct answer.
 
        
             
        
        
        
Answer:
b
Explanation:
the other answer choices refer to the force of gravity, b is talking about the condition of the disaster and how significant it is