Answer:
Blurrin effect
Step-by-step explanation:
Vivian used the technique of blurring the branch in the background of the photo. This means that she intentionally made the branch appear less sharp and clear compared to the butterfly in the foreground. By doing so, Vivian reduced the visual impact or prominence of the branch, allowing the butterfly to become the main focus of the image. This technique helps draw attention to the subject she wanted to emphasize, which in this case is the butterfly.