Step 1: Understanding the Concept:
Dematerialization (Demat) is the process where physical share certificates are converted into electronic form. A Demat account is mandatory for trading in the Indian stock market.
Step 2: Detailed Explanation:
Just as a bank account holds cash in electronic form, a Demat account holds securities (shares, bonds, debentures) in electronic form. The primary purpose is to eliminate the risks of physical certificates (theft, forgery, or damage) and to facilitate the easy "holding and transferring" of these securities during trading.
Step 3: Final Answer:
The correct option is (a).