Which of the following images is/are tessellation(s)?

Pattern A
Pattern B
Pattern C
Pattern D

The correct option is D All of the patterns are tessellations.
A tessellation is a repeated pattern formed on a plane using one or more fixed shapes, without any gaps or overlaps.

• In pattern A, the repeated shapes are

1. Parallelogram
2. Triangle

• For pattern B, the repeated shapes are

1. Triangle
2. Square

• Similarly, for pattern C, the repeated shapes are

1. Rectangle
2. L shaped figure

• In the same way, for pattern D, the shapes which get repeated are

1. Square
2. Triangle
3. Parallelogram

In all four patterns, there are no gaps or overlaps.
Hence, all these are tessellations.