Answer: 
Understood by many
Explanation: 
A universal gesture would technically be understood by all of these, but the broad answer you’re looking for would be that a universal gesture (like waving to say hello to someone far away) is understood by many.
        
             
        
        
        
The answer is number 3, Boromir.
        
             
        
        
        
Answer:
It means that for some reason the group of people in the sentence paid special attention to the name for one reason or another. 
 
        
             
        
        
        
"Of" is a preposition in the phrase "Of studying" and "until" is another, as well as "to" in the phrase "to college" so there are 3 in that sentence.