A.I. Explanation:

Correct answer: disclose

Explanation: The verb 'disclose' fits grammatically as it is in the base form, which is appropriate after 'to' indicating an action that needs to be taken. Contextually, it aligns with the need to reveal or make known business emissions, which is the main topic of the sentence.

Meaning: 'Disclose' means to make something known or to reveal information that was previously hidden.

Wrong options:

• popularize: The verb 'popularize' means to make something popular or well-known, which does not fit the context of revealing emissions.
• discuss: The verb 'discuss' means to talk about something, but it does not imply the act of revealing or making information public, which is required here.
• data: The noun 'data' does not fit grammatically as it cannot serve as a verb in this context.
• fame: The noun 'fame' refers to being well-known, which does not relate to the action of revealing emissions.

Correct answer: data

Explanation: The noun 'data' fits grammatically as it serves as the subject of the sentence, indicating the information about emissions. Contextually, it is relevant as it refers to the information that can be analyzed to determine the causes of climate change.

Meaning: 'Data' refers to facts and statistics collected for reference or analysis.

Wrong options:

• campaigners: The noun 'campaigners' refers to individuals who actively promote a cause, which does not fit as it does not represent information about emissions.
• popularize: The verb 'popularize' does not fit grammatically as it cannot serve as a noun in this context.
• disclose: The verb 'disclose' does not fit as it cannot serve as a noun and does not represent information.
• fame: The noun 'fame' does not relate to the context of emissions data and does not fit grammatically.

Correct answer: campaigners

Explanation: The noun 'campaigners' fits grammatically as it is plural and refers to individuals involved in environmental advocacy. Contextually, it aligns with the discussion about the attitudes of those who should be addressing emissions issues.

Meaning: 'Campaigners' are individuals who actively work to promote a cause or raise awareness about an issue.

Wrong options:

• data: The noun 'data' does not fit as it refers to information and cannot represent individuals in this context.
• popularize: The verb 'popularize' does not fit as it cannot serve as a noun and does not refer to people.
• disclose: The verb 'disclose' does not fit as it cannot serve as a noun and does not refer to individuals.
• fame: The noun 'fame' does not relate to individuals involved in environmental issues and does not fit grammatically.