In the above pattern, we observe that each row in a figure has one more block than the one in the previous figure in that row.

For example, in the second figure:

The first row has three blocks, which is one more than the number of blocks in that row in the first figure.

The second row has two blocks, which is one more than the number of blocks in that row in the first figure.

The third row has three blocks, which is one more than the number of blocks in that row in the first figure.

Also, the new blocks in all the rows are added to the left.

So, the fourth figure will have, 5 blocks in the first row, 4 blocks in the second row and 5 blocks in the third row.

So the figure that will come next in the pattern is :