A.I. Explanation:

Correct answer: wellbeing

Explanation: The term 'wellbeing' fits grammatically and contextually as it refers to the state of being comfortable, healthy, or happy, which aligns with the benefits of physical activity mentioned in the sentence.

Meaning: 'Wellbeing' means a state of health and happiness, indicating that regular physical activity contributes positively to an individual's overall health.

Wrong options:

• values: 'Values' refers to principles or standards of behavior, which does not relate to health in this context.
• immortality: 'Immortality' means living forever, which is not a direct benefit of physical activity and does not fit the context.
• expectation: 'Expectation' refers to a belief about what will happen in the future, which is unrelated to the health benefits discussed.

Correct answer: chronic

Explanation: The word 'chronic' is appropriate as it describes diseases that are long-lasting and persistent, fitting the context of health risks associated with physical inactivity.

Meaning: 'Chronic' refers to conditions that are long-term and ongoing, such as chronic diseases like heart disease and diabetes.

Wrong options:

• contraindicated: 'Contraindicated' means not recommended due to potential harm, which does not apply to the context of health risks.
• untouched: 'Untouched' implies something that has not been affected, which does not relate to the concept of diseases in this context.
• detectable: 'Detectable' refers to something that can be discovered or identified, which does not fit the context of describing the nature of diseases.

Correct answer: recommends

Explanation: The verb 'recommends' is suitable as it indicates that the guidelines suggest a certain action, aligning with the context of providing health advice.

Meaning: 'Recommends' means to advise or suggest something as a course of action, in this case, the amount of physical activity needed.

Wrong options:

• excludes: 'Excludes' means to leave out, which contradicts the purpose of guidelines that aim to include recommendations for health.
• denotes: 'Denotes' means to indicate or signify, which does not convey the advisory nature of the guidelines.
• defies: 'Defies' means to openly resist or refuse, which is not relevant to the context of health recommendations.

Correct answer: preferably

Explanation: The adverb 'preferably' fits well as it suggests an ideal or recommended choice, which aligns with the guidelines for physical activity.

Meaning: 'Preferably' means ideally or if possible, indicating that the activity should be done daily for optimal health benefits.

Wrong options:

• relatively: 'Relatively' means in relation to something else, which does not convey the intended meaning of an ideal recommendation.
• absolutely: 'Absolutely' implies without exception, which does not match the advisory tone of the guidelines.
• namely: 'Namely' is used to specify or clarify, which does not fit the context of suggesting a preferred frequency of activity.

Correct answer: obtain

Explanation: The verb 'obtain' is appropriate as it indicates the action of acquiring health benefits, fitting grammatically and contextually within the sentence.

Meaning: 'Obtain' means to get or acquire, in this case, referring to gaining health benefits from physical activity.

Wrong options:

• charge: 'Charge' typically refers to an accusation or a fee, which does not relate to acquiring health benefits.
• weigh: 'Weigh' means to measure weight or consider, which does not fit the context of gaining health benefits.
• estimate: 'Estimate' means to roughly calculate or judge, which does not convey the action of acquiring benefits.