Correct Answer:

Solution : According to the given figure series –
1. In the second, fourth and sixth boxes of the figure, the line with a symbol at the corner moves from the third position to the first position, and the line with a symbol at the corner moves from the first position to the second position and the line with a symbol at the corner moves at the second position to the third position.
2. In the second, fourth and sixth boxes of the figure the line with a symbol at the corner flips horizontally.
3. In each even-numbered box the line with a new symbol at the corner has been introduced.
So, following the above pattern, the required figure will be as follows –

Therefore, the complete figure is as follows –

Hence, the first option is correct.