The reader is introduced to the marlin because Santiago sees one of the projecting sticks dip in the water (B). 
In <em>The Old Man and the Sea</em>, the main character becomes aware of the presence of the marlin when he realizes something is tugging at his hundred-fathom-deep fishing line. Because of the strength of the bite, the stick to which the line is attached is pulled into the water. Santiago immediately recognizes the fish as being a large marlin.
 
        
             
        
        
        
Answer:
A markup language is a language used to describe the content and structure of documents.
Explanation:
Markup Language is a structured computer language that lets you identify and use common elements of a document like headings, paragraphs, and lists. The two most popular markup languages nowadays are HTML and XML since they are used all over the internet and in most of the documents we work with every day.
 
        
             
        
        
        
communicate effectively with the intended audience