The transformation Ro, -90° , means rotating the figure by 90° in the Anti-Clock Wisedirection.
How to solve the given question?
As it is mentioned that the given triangle has to undergo transformation Ro, -90°, which means we need to rotate the figure by 90° in the anti-clockwise direction.
Thus, for the given condition option C suits the best.
Why other options are incorrect?
In option A, we can see that it is the mirrorimage about the y axis.
In option B, the triangle is rotated by 90° but in the clockwise direction.
In option D, the triangle is rotated by 90° but in the clockwise direction.
