Step 1: Identify the amendment.
The Constitution (106\textsuperscript{th}) Amendment Act, 2023—{Nari Shakti Vandan Adhiniyam}—provides one-third (33%) reservation of seats for women in the Lok Sabha and State Legislative Assemblies.
Step 2: Constitutional mechanism.
It inserts Articles 330A, 332A (reservation) and Article 334A (sunset/review). Operationalisation is linked to delimitation after a census.
Step 3: Conclude.
\[
\boxed{\text{33% reservation (Option C).}}
\]