Choice-B is the true one.
        
                    
             
        
        
        
Answer:
Phenomenon
Explanation:
phe·nom·e·non
/fəˈnäməˌnän/
noun
1.
a fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question:
"glaciers are unique and interesting natural phenomena"
synonyms
occurrence, event, happening, fact, situation, etc.
2.
a remarkable person, thing, or event:
"the band was a pop phenomenon just for their sales figures alone"
synonyms
marvel, sensation, wonder, prodigy, miracle, etc.
 
        
             
        
        
        
Answer:
2nd one if you ask me 
almost every baby stats to talk after their a year old
 
        
             
        
        
        
Answer:
5 m/s2, left
Explanation:
We can solve the problem by applying Newton's second law of motion, which  states that:

where:
 is the net force acting on an object
 is the net force acting on an object
m is the mass of the object
a is its acceleration
In this problem, we have:
 (to the left) is the net force on the object
 (to the left) is the net force on the object
m = 2.0 kg is the mass
So, the acceleration is:
 
 
in the same direction as the force (left).