Meaning: To 'absorb' means to take in or soak up a substance, in this case, pollutants from the air.

Wrong options:

• harmony: The noun 'harmony' refers to a pleasing arrangement or combination, which does not fit the action of plants in relation to pollutants.
• diminish: The verb 'diminish' means to reduce or lessen, which does not accurately describe what plants do to pollutants.
• productivity: The noun 'productivity' refers to the effectiveness of productive effort, which is unrelated to the action of plants regarding air quality.

Correct answer: stress

Explanation: The noun 'stress' fits contextually as it refers to the mental or emotional strain that can be alleviated by the presence of greenery. It is grammatically correct as it serves as the object of the verb 'reducing.'

Meaning: 'Stress' refers to a state of mental or emotional strain or tension resulting from adverse or demanding circumstances.

Wrong options:

• harmony: The noun 'harmony' does not relate to emotional strain and does not fit in the context of reducing negative feelings.
• productivity: The noun 'productivity' is unrelated to emotional well-being and does not fit the context of mood improvement.

Correct answer: care

Explanation: The noun 'care' fits grammatically as it describes the attention and maintenance required for plants. It aligns with the context of choosing plants that are easy to manage.

Meaning: 'Care' refers to the process of looking after someone or something, in this case, plants.

Wrong options:

• harmony: The noun 'harmony' does not relate to the maintenance of plants and does not fit the context of plant care.
• productivity: The noun 'productivity' is unrelated to the act of caring for plants and does not fit the context.

Correct answer: elevate

Explanation: The verb 'elevate' fits grammatically as it describes the action of enhancing or raising the aesthetics of a space. It is contextually appropriate as it indicates improvement in visual appeal.

Meaning: To 'elevate' means to raise or lift something to a higher position, in this case, the aesthetics of a space.

Wrong options:

• harmony: The noun 'harmony' does not describe an action and does not fit the context of improving aesthetics.
• diminish: The verb 'diminish' means to reduce, which is the opposite of what is intended in enhancing aesthetics.

Correct answer: maintenance

Explanation: The noun 'maintenance' fits grammatically as it refers to the process of keeping something in good condition. It is contextually relevant as it emphasizes the importance of caring for plants to ensure their longevity.

Meaning: 'Maintenance' refers to the process of preserving or keeping something in good condition, particularly through regular care.

Wrong options:

• harmony: The noun 'harmony' does not relate to the upkeep of plants and does not fit the context of ensuring their longevity.
• productivity: The noun 'productivity' is unrelated to the care of plants and does not fit the context.