Answer:
Correct option is 2. The lengths of two adjacent sides of the parallelogram are 4 cm and 7 cm.
Explanation:
The opposite sides of a parallelogram are equal.


Divide both sides by 2.

The value of n is 2.
The lengths of two adjacent sides of the parallelogram are


Therefore the correct option is 2. The lengths of two adjacent sides of the parallelogram are 4 cm and 7 cm.