A line segment is a line that has two points on both ends. A point is just as it says, a point that shows a coordinate within a geometric figure. A ray on the other hand is a line with one point on one end and an arrow on the other. A vertical line with an arrow at each end then is a line. The arrow shows that the line extends further. 
The answer is C.
        
             
        
        
        
The correct answer is the Emulsion test
        
             
        
        
        
Answer:
Sound Waves travel fastest through the Solid medium which is why Option 1 would be correct!
Hope this helps! :)
 
        
             
        
        
        
Answer:
3 and 4
Explanation:
Both appear to be up river which mean they're coming DOWN to contaminate the uptake. If they're ahead of the uptake facility they're not going to show up in the water. I only know this because of City Skylines :)
 
        
             
        
        
        
 
 
A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball