Answer:
The correct answer to the following question will be Option B (15).
Explanation:
The given values is:
LN = 30 cm
Although the diagonals of that same rhombus bisects or bend one another, this implies that P seems to be the midpoint of both the LN.
So that,
⇒

On putting the estimated value, we get
⇒

⇒

Therefore, Option B seems to be the appropriate one.