યાદી \(-I\) અને યાદી\(-II\)ને મેળવો.

List \(- I\)	List \(- II\)
\((a)\) સ્કંધાસ્થિ	\((i)\) કાસ્થિમય સાંધો
\((b)\) ખોપરી	\((ii)\) ચપટ અસ્થિ
\((c)\) ઉરોસ્થિ	\((iii)\) તંતુમય સાંધો
\((d)\) કરોડ સ્તંભ	\((iv)\) ત્રિકોણાકાર ચ૫ટ અસ્થિ

નીચેના વિકલ્પોમાંથી સાચો જવાબ પસંદ કરો. \((a)- (b) -(c) -(d)\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.