A.I. Explanation:

Correct answer: disposable

Explanation: The word 'disposable' fits grammatically as it describes products that are intended to be used once and then discarded. This aligns with the context of discussing habits that harm the environment, as disposable products contribute significantly to landfill waste.

Meaning: 'Disposable' refers to items that are designed to be used briefly and then thrown away, often leading to environmental issues.

Wrong options:

• reusable: The term 'reusable' describes products that can be used multiple times, which contradicts the context of reducing reliance on single-use items.
• digital: 'Digital' refers to electronic formats and does not relate to physical products that end up in landfills.
• activities: 'Activities' refers to actions or tasks, which does not fit as a descriptor for products.
• biodegradable: While 'biodegradable' describes products that can decompose naturally, it does not fit the context of reducing reliance on harmful products.
• perishable: 'Perishable' refers to items that decay quickly, such as food, which does not apply to the context of disposable products.

Correct answer: biodegradable

Explanation: The term 'biodegradable' fits well as it describes goods that can decompose naturally, thus minimizing waste and supporting environmental sustainability. This aligns with the context of opting for better alternatives to harmful products.

Meaning: 'Biodegradable' refers to materials that can be broken down by natural processes, reducing their impact on the environment.

Wrong options:

• efficient: 'Efficient' describes appliances that use less energy, which does not fit as a descriptor for goods in this context.
• disposable: 'Disposable' refers to single-use items, which contradicts the idea of minimizing waste.
• activities: 'Activities' refers to actions rather than products, making it irrelevant in this context.
• digital: 'Digital' pertains to electronic formats and does not relate to physical goods.
• perishable: 'Perishable' refers to items that spoil quickly, which does not apply to the context of sustainable goods.

Correct answer: efficient

Explanation: The word 'efficient' is appropriate as it describes appliances that use less energy, aligning with the context of conserving energy in a sustainable lifestyle. This fits grammatically and contextually as it emphasizes the importance of energy-saving devices.

Meaning: 'Efficient' refers to the ability to achieve maximum productivity with minimum wasted effort or expense, particularly in energy consumption.

Wrong options:

• disposable: 'Disposable' refers to single-use items, which does not relate to appliances or energy conservation.
• biodegradable: While 'biodegradable' pertains to products that decompose, it does not fit the context of energy-efficient appliances.
• activities: 'Activities' refers to actions rather than appliances, making it irrelevant here.
• digital: 'Digital' pertains to electronic formats and does not describe appliances in terms of energy consumption.
• perishable: 'Perishable' refers to items that spoil quickly, which does not apply to the context of energy-efficient appliances.

Correct answer: activities

Explanation: The term 'activities' fits well as it refers to actions like cycling or walking, which are alternatives to driving. This aligns with the context of reducing carbon emissions through lifestyle changes.

Meaning: 'Activities' refers to actions or tasks that individuals engage in, particularly those that promote sustainability.

Wrong options:

• disposable: 'Disposable' refers to single-use items, which does not fit the context of actions taken to reduce emissions.
• biodegradable: 'Biodegradable' describes products rather than actions, making it irrelevant in this context.
• efficient: 'Efficient' describes appliances and does not relate to actions like cycling or walking.
• digital: 'Digital' pertains to electronic formats and does not describe physical activities.
• perishable: 'Perishable' refers to items that spoil quickly, which does not apply to the context of sustainable activities.