Correct Option is 1 : Single unified market
The Union Ministry of Agriculture and Farmers Welfare drafted the Model Agricultural Produce and Livestock Marketing (Promotion & Facilitation) Act, 2017. The agricultural ministry has unveiled 'A.P.M.C. Act 2017’ which has defined each state/UT as a singel unified market. 

10 + 3 -6
After replacing signs,
10 - 3 × 6
= 10 - 18
= -8

The CBI on 02 July launched a “special drive” against alleged bank fraudsters and carried out coordinated searches at 50 locations in 18 cities across the country. The Central agency registered 14 separate cases involving Rs. 640 crore of siphoned funds.

On June 27, Exporters body Federation of Indian Export Organisations (FIEO) has elected Sharad Kumar Saraf as its new president. Saraf has replaced renowned exporter Ganesh Kumar Gupta, who will hand over the charge to the new president. Saraf will work in further pushing the issues of exporters at different forums and boost the country's exports.

The IBRD and IDA provide loans at preferential rates to member countries, as well as grants to the poorest countries. The IBRD and its concessional lending arm, the International Development Association, are collectively known as the World Bank as they share the same leadership and staff.

n the survey of Cleanliness Ranking Report conducted by the Quality Council of India, Jodhpur has been declared the top position in the cleanliness ranking in A1 category and Marwar took the pole position in A category.
TOP RAILWAY STATIONS IN A1 CATEGORY: 1)Jodhpur 2)Jaipur 3)Tirupati
RAILWAY STATIONS IN A CATEGORY
1) Marwar 2) Phulera 3)Warangal.
Top zones:
1) North Western Railway
2) South Central Railway
3) East Coast Railway

In 6 years sum becomes k times, so
In 24 years (6×4) sum will becomes k×4 = 4k times

Filmmaker Imtiaz Ali will be felicitated by the Portuguese government for choosing Portugal as a location to shoot his movies and promoting the country. Ali will be awarded the Touristic Medal of Merit through the Portugal's Secretary of State for Tourism, a press release issued by Visit Portugal said. The director's 2017 movie "Jab Harry Met Sejal, starring Shah Rukh Khan and Anushka Sharma, was principally shot in Portugal.

Sodium bicarbonate, commonly known as baking soda, is a chemical compound with the NaHCO₃ formula. It is a salt composed of sodium ions and bicarbonate ions. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder.

According to Ohm's Law,
I = V/R; where I Is the current and V is the potential difference (in volt) and R is the Resistance.
Current is how much charge is passing through the resistor per second.
So according to the question, I = 12/4 = 3.