Policy makers and media have placed the blame for sky-rocketing food prices on a variety of factors, including high fuel prices, bad weather in key food producing countries, and the diversion of land to non-food production. Increased emphasis, however, has been placed on a surge in demand for food from the most populous emerging economies. It seems highly probable that mass consumption in these countries could be well poised to create a food crisis.

With reference to the above passage, the following assumptions have been made:
1. Oil producing countries are one of the reasons for high food prices.
2. If there is a food crisis in the world in the near future, it will be in the emerging economies.
Which of the above assumptions is/are valid?

The correct option is Neither 1 nor 2.

Let us analyze the validity of each assumption based strictly on the passage provided:

Analysis of Assumption 1:
Assumption 1 states: "Oil producing countries are one of the reasons for high food prices."
The passage mentions "high fuel prices" as one of the factors blamed for sky-rocketing food prices. However, it does not mention "oil producing countries" or place the responsibility on them directly (fuel prices can rise due to taxes, refining capacity, demand, supply chain disruptions, etc.). Claiming that oil-producing countries themselves are the reason goes beyond the premise given in the passage. Therefore, Assumption 1 is not valid.

Analysis of Assumption 2:
Assumption 2 states: "If there is a food crisis in the world in the near future, it will be in the emerging economies."
The passage states that "mass consumption in these countries [populous emerging economies] could be well poised to create a food crisis." This means the cause or source of the global demand leading to a food crisis stems from emerging economies, but it does not assume that the food crisis itself will occur exclusively in the emerging economies. A global food crisis affects the entire world, not just the countries driving demand. Therefore, Assumption 2 is not valid.

Since neither of the assumptions is valid, the correct choice is Neither 1 nor 2.