Q.Registering and controlling the functioning of collective investment schemes is called as ______.

Collective investment schemes registered and controlled by SEBI are known as mutual funds, so the correct answer is option (b).

Explanation:

• Among SEBI's regulatory functions is "registering and regulating the working of collective investment schemes, including mutual funds". A collective investment scheme pools money from many small investors and invests it in securities; mutual funds are the most common form.
• (a) Rematerialisation means converting electronic (demat) holdings back into physical share certificates — a trading/depository process, not a collective scheme. …