Option 1 states that Alauddin Khalji placed markets under the control of a high officer called `Shahna` for strictly controlling the shopkeepers and prices. This statement is correct. Alauddin Khalji did indeed implement a market policy where he appointed a high officer called `Shahna` to oversee and control the activities of shopkeepers and regulate prices. This was done to prevent any hoarding, black marketing, or price manipulation by the shopkeepers, ensuring fair pricing and availability of goods in the market.

Option 2 states that Alauddin Khalji ordered the land revenue from the Doab region to be paid directly to the state to ensure a regular supply of cheap food grains. This statement is also correct. Alauddin Khalji implemented various measures to ensure a regular supply of food grains at affordable prices. One of these measures was collecting land revenue directly from the Doab region and using it to maintain state granaries and distribute food grains at subsidized rates to the people.

Therefore, both statements are correct. Alauddin Khalji`s market policy included placing markets under the control of a high officer and ensuring a regular supply of cheap food grains by collecting land revenue from certain regions.