Meaning: To 'acknowledge' means to recognize or admit the existence or truth of something, in this case, their reliance on corn.

Wrong options:

• remember: 'Remember' implies recalling something from memory, which does not fit the context of recognizing dependence.
• renown: 'Renown' refers to being famous or well-known, which does not relate to the act of recognizing dependence on corn.
• knowledge: 'Knowledge' is a noun referring to information or awareness, which does not fit grammatically as a verb in this context.

Correct answer: staple

Explanation: The word 'staple' is a noun that refers to a primary or essential item, particularly in terms of food. It fits grammatically and contextually as it describes corn as a fundamental part of their diet.

Meaning: A 'staple' is a basic food item that is used frequently and is essential for a diet, indicating that corn is a crucial part of their nutrition.

Wrong options:

• fix: 'Fix' is a verb that means to repair or attach, which does not fit the context of describing a food item.
• range: 'Range' refers to a variety or extent of something, which does not accurately describe corn's role in their diet as a primary food source.
• variety: 'Variety' implies a selection of different types, which does not convey the idea of corn being a fundamental food item.

Correct answer: from

Explanation: The preposition 'from' is used to indicate the source of something. It fits grammatically and contextually as it shows that the calories come directly out of corn, making it the correct choice.

Meaning: 'From' indicates the origin or source of something, in this case, the calories that come from corn.

Wrong options:

• for: 'For' indicates purpose or benefit, which does not fit the context of indicating the source of calories.
• again: 'Again' implies repetition, which does not make sense in the context of discussing the source of calories from corn.
• main: 'Main' is an adjective that describes something as primary, but it does not function as a preposition needed in this context.

Correct answer: manifestation

Explanation: The word 'manifestation' is a noun that refers to an indication or sign of something. It fits grammatically and contextually as it describes the physical representation of corn in the body of Mexicans.

Meaning: A 'manifestation' is a clear indication or display of something, suggesting that the physical presence of corn is evident in their bodies.

Wrong options:

• display: 'Display' is a noun that refers to showing something, which does not convey the deeper meaning of representation implied in the context.
• show: 'Show' is a verb that means to present or display, which does not fit grammatically as a noun in this context.
• exhibition: 'Exhibition' refers to a public display of works or items, which does not accurately describe the relationship between corn and the physical state of Mexicans.