Can be used to create smooth animations or to display one of severalimages based on the requirement.
? image downloading
? image preloading
? image uploading
? image postloading

Image preloading

Explanation:

The Image Preloading process  can be describes as follows:

1. Using the new keyword an instance of the image object is created.

2. The src property and the flename of the image is set be equal.

3. Then image is downloaded into the cache with displaying it.

4. The src property is set equal to the prefetched image when it is required to display the image.

answer; i believe that the correct answer is (a)