Question <p>What is the purpose of the `cv2.imwrite()` function in OpenCV?</p>

Option 1 <p>Read an image from a file</p>

Option 2 <p>Display an image in a window</p>

Option 3 <p>Save an image to a file</p>

Option 4 <p>Convert an image to grayscale</p>

Correct Answer Option 1 Option 2 Option 3 Option 4