Please Help Me!!*Model given*

Question:
The figure PQRS is made up of triangles PTS, TQU, URS and TUS. PQRS is a
square of side 12 cm. PT = TQ = QU = UR. Find the shaded area.

answer; i do believe that the answer is (c) electrolyte imbalance or (d) cessation of menstrual cycle; plz check first good luck

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

answer; evidence; reverseremand;