Answer:
The correct answers are: I. Investment banks generally cannot be specialists. and V. Specialists help maintain continuous trading.
Step-by-step explanation:
Stock market specialists execute purchase or sale orders commissioned by a stockbroker. In the same way, when there are not enough buyers or sellers, specialists buy or sell on their own against the market trend. That is, they have the obligation to buy when there is not enough demand and the obligation to sell when there is not enough supply, in order to provide stability and liquidity to the market. Specialists play a role comparable to that of an air traffic controller: just as air traffic controllers are in charge of maintaining order among aircraft in flight, specialists maintain a fair and orderly market in the values assigned to them.