A.I. Explanation:

Correct answer: increased

Explanation: The word 'increased' is the past participle of the verb 'increase,' which fits grammatically as it describes the action of global demand for food over the specified period. The context indicates a steady rise in demand, making 'increased' the appropriate choice.

Meaning: 'Increased' means that something has become greater in amount or degree.

Wrong options:

• deteriorations: Deteriorations refers to a decline or worsening, which contradicts the context of rising demand.
• fluctuate: Fluctuate is a verb meaning to vary or change irregularly, which does not fit the steady increase described.
• dipped: Dipped is the past tense of dip, meaning to decrease, which is opposite to the intended meaning of rising demand.

Correct answer: improvements

Explanation: The term 'improvements' is a noun that refers to the positive changes in incomes. It fits grammatically as it aligns with the plural structure of the sentence and contextually supports the idea of better economic conditions contributing to food demand.

Meaning: 'Improvements' means positive changes or advancements in a particular area.

Wrong options:

• deteriorations: Deteriorations refers to worsening conditions, which does not fit the context of economic growth.
• stronger: Stronger is an adjective that describes something with more strength, which does not fit as it does not refer to changes in income.
• decline: Decline is a noun that indicates a decrease, which contradicts the positive context of improvements.

Correct answer: decline

Explanation: The word 'decline' is a noun that indicates a decrease in food prices. It fits grammatically and contextually as it describes the trend of prices continuing to drop through the year 2000, aligning with the overall narrative of demand and supply.

Meaning: 'Decline' means a reduction or decrease in quantity or quality.

Wrong options:

• deteriorations: Deteriorations refers to a worsening condition, which does not accurately describe the trend of food prices in this context.
• fluctuate: Fluctuate is a verb that means to change irregularly, which does not fit the context of a consistent decline in prices.
• dipped: Dipped is the past tense of dip, which implies a temporary decrease rather than a sustained decline.

Correct answer: stronger

Explanation: The word 'stronger' is a comparative adjective that describes a greater degree of growth in demand. It fits grammatically as it compares the growth in demand to previous levels, emphasizing the intensity of the increase.

Meaning: 'Stronger' means having more strength or intensity compared to something else.

Wrong options:

• deteriorations: Deteriorations refers to a decline, which contradicts the context of increasing demand.
• improvements: Improvements is a noun that does not fit grammatically as it does not describe the comparative nature of growth.
• decline: Decline is a noun that indicates a decrease, which is opposite to the intended meaning of stronger growth.