Why would an investor want to use index options to hedge a portfolio of common stock? Could

Question:

Why would an investor want to use index options to hedge a of common stock? Could the same objective be obtained using options on ETFs? If the investor thinks the market is in for a fall, why not just sell the stock?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...