Answer:
B
Step-by-step explanation:
The red graph is represented by the function: 
[tex]f(x)=x^2[/tex]
And we want the equation of the blue graph. 
We can see that the blue graph is simply the red graph shifted 2 units horizontally to the right. 
A horizontal transformation is given by: 
[tex]f(x-h)[/tex]
Where h is the number of units we shift (to the right). 
Since we shifted two units to the right, h = 2. 
So, our new function will be: 
[tex]g(x)=f(x-2)=(x-2)^2[/tex]
Therefore: 
[tex]g(x)=(x-2)^2[/tex]
Our answer is B. 
Notes: 
A represents a vertical shift of two units downwards. 
C (assuming it is x²) represents a vertical shift of two units upwards. 
And D (if you let h = -2, then f(x - (-2)) = f(x + 2) = (x + 2)²) is a horizontal shift of two units to the left.