Step 1: Identify the concept being tested.
The case is built around the functions performed by SEBI, the Securities and Exchange Board of India, which watches over the stock market so that investors like Riya are not cheated.
Step 2: Explain the concept.
SEBI's Regulatory Functions cover things like registering brokers and agents, laying down rules for trading, and conducting enquiries and audits of stock exchanges. Its Protective Functions exist purely to guard investors, by checking fraudulent and unfair practices such as price rigging and insider trading.
Step 3: Apply the concept to the facts of the case.
When Smart-Tech Ltd's share price shot up on rumours and then crashed, SEBI called for detailed trading information and carried out enquiries and inspections, which is its Regulatory Function in action. When SEBI then took action against the group of traders responsible for spreading the false rumour and manipulating the price, that was its Protective Function, since it directly shielded investors like Riya from loss due to fraud.
Step 4: State the final answer.
Regulatory Function: SEBI called for detailed trading records and conducted enquiries and inspections into the matter. Protective Function: SEBI took action against the group of traders who had rigged the price, protecting investors from unfair practices.