Meaning: 'Calculate' means to determine the amount or number of something, often through mathematical processes.

Wrong options:

• absorb: The verb 'absorb' refers to taking in or soaking up, which does not relate to determining energy intakes.
• alarm: The noun 'alarm' refers to a warning signal or a state of fear, which is irrelevant in the context of energy intake calculations.
• supposed: The verb 'supposed' implies an assumption or expectation, which does not fit the context of calculating energy intakes.
• activity: The noun 'activity' does not fit as it does not represent an action related to calculating energy intakes.

Correct answer: activity

Explanation: The noun 'activity' is appropriate as it refers to the physical actions or exercises individuals engage in, which directly influences energy requirements. It fits grammatically as it is a singular noun that aligns with the context of energy expenditure.

Meaning: 'Activity' refers to the state of being active or engaging in physical tasks.

Wrong options:

• maintain: The verb 'maintain' does not fit as it refers to keeping something in a certain state, which is unrelated to the context of describing patterns of behavior.
• absorb: The verb 'absorb' does not relate to the context of physical actions or behaviors that affect energy needs.
• expressed: The verb 'expressed' does not fit as it refers to conveying something, which does not describe a pattern of behavior.
• alarm: The noun 'alarm' is unrelated to the context of physical actions and does not fit grammatically or contextually.
• supposed: The verb 'supposed' does not relate to the description of physical actions and is not appropriate in this context.

Correct answer: expressed

Explanation: The verb 'expressed' fits grammatically as it indicates how energy requirements are communicated or represented. It aligns with the context of conveying energy needs in a specific manner.

Meaning: 'Expressed' means to convey or communicate something in a particular form or manner.

Wrong options:

• maintain: The verb 'maintain' does not fit as it refers to keeping something in a certain state, which does not relate to how energy requirements are communicated.
• calculate: The verb 'calculate' does not fit as it refers to determining a value rather than conveying it.
• absorb: The verb 'absorb' is unrelated to the context of communicating energy requirements and does not fit grammatically.
• alarm: The noun 'alarm' does not relate to the context of expressing energy needs and is irrelevant here.
• supposed: The verb 'supposed' does not fit as it implies an assumption rather than a method of communication.

Correct answer: maintain

Explanation: The verb 'maintain' fits grammatically as it describes the action of keeping a certain state or level, which is relevant to energy requirements. It aligns with the context of sustaining health and energy balance.

Meaning: 'Maintain' means to keep something in a particular state or condition.

Wrong options:

• calculate: The verb 'calculate' does not fit as it refers to determining a value rather than keeping a state.
• absorb: The verb 'absorb' is unrelated to the context of sustaining energy levels and does not fit grammatically.
• expressed: The verb 'expressed' does not fit as it refers to conveying information rather than keeping a state.
• alarm: The noun 'alarm' does not relate to the context of sustaining energy levels and is irrelevant here.
• supposed: The verb 'supposed' does not fit as it implies an assumption rather than an action of sustaining.