Answer:
C. 
Step-by-step explanation:
We are asked to select the correct name for the given line.
We know that a line is a collection of points that continues forever in both directions.
A line is denoted by two sided arrow on top of the name of the line as:

We can see that points E and F lies on our given line, so the name of our line would be line EF.

Therefore, option C is the correct choice.