Answer: Alignment
Explanation:
The principle of repitition indicates that some aspect of a design are repeated. This can be in form of bullet list, lines, color etc.
Balance has to do with how the weight is distributed. 
The Principle of Alignment means that the pictures on a page should be connected visually to another thing. 
Principle of Proximity simoly means that the items that are related on a page should be close to each other. 
Therefore, the principles of page layout that Sam is planning to use in this artwork is alignment. 
 
        
             
        
        
        
D I,II and III is the answer i think
 
        
             
        
        
        
Answer:
The missing code to this question is g.
Explanation:
In this question firstly import packages. Then declaration of the class Test that inherits the JApplet. In this class, we declare the default constructor. In this constructor, we call the add function. Then we declare another class that is SquarePanel. This class inherits JPanel. In this class, we define a method that is paintComponent(). In this method, we define an integer variable. In this method, we perform calculations and pass it to another function that is displaySquares(). In this function, we pass the value as the arguments. So in question the missing code or argument is g.
 
        
             
        
        
        
Answer:
The steps required to add a bibliography after adding the sources of the information contained in the document and marking the references made in the text, are;
1. Click to select insertion point of the bibliography
2. Select the Reference tab by clicking on the Reference tab in the ribbon
3. Within the Citations & Bibliography group, select Bibliography to open  a dropdown list of bibliography format
4. Select the applicable format
5. By selecting the desired bibliography format, the bibliography is inserted at the selected insertion point of the document
Explanation: