Which choice shows a translation?

c.)

Step-by-step explanation:

A translation in this case is defined as moving or turning a shape.

-In option A, the triangle is only being shrunk. Therefore, it would not be moving or turning of the shape.

-In option B, The triangle is staying the same.

-In option C, the triangle is being translated counter-clockwise.

-In option D, the triangle is being reflected along the line.

I hope this helps :)

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.