Right option is (d) Pixel Replication
Best explanation: A special case of nearest neighbor interpolation is Pixel replication and is applicable when we want to increase the size of an image an integer number of times.
For example, doubling the size of an image is achieved duplicating each column and hence image size gets doubled in the horizontal direction. Then, we duplicate each row of the enlarged image to double the size in the vertical direction. Similarly, enlarging the image by any integer number of times (triple, quadruple, and so on) is possible.