He's nervous about facing the Christmas Celebration since he's been known as a scrooge for such a long time!
        
                    
             
        
        
        
Mother
Older Brother
Older Brother
Younger Brother
        
             
        
        
        
Explanation:
The activities in which human beings are engaged in different kinds of economic works to generate income are called economic activities. 
or in simple words
Any work from which we can generate income are called economic activities
hope this helps you
 
        
                    
             
        
        
        
The most common way to start a sentence is with a subject, making the correct answer B. 
An example would be a simple sentence "He broke the window" where "he" is the subject.