A.I. Explanation:

Correct answer: involving

Explanation: The word 'involving' fits grammatically as it indicates participation or inclusion of thousands of fake accounts in the campaign. It aligns with the context of describing the nature of the propaganda campaign, making it clear that these accounts are part of the operation.

Meaning: 'Involving' means to include or engage someone or something in an activity or situation.

Wrong options:

• including: While 'including' suggests that something is part of a whole, it does not convey the active participation implied by 'involving.'
• incorporating: 'Incorporating' suggests a more formal integration, which does not fit the context of a propaganda campaign as fluidly as 'involving.'
• investing: 'Investing' implies allocating resources, which does not relate to the context of a propaganda campaign involving accounts.

Correct answer: spreading

Explanation: The word 'spreading' is appropriate as it conveys the action of disseminating disinformation, fitting both grammatically and contextually within the sentence structure.

Meaning: 'Spreading' means to distribute or disperse something widely, in this case, disinformation.

Wrong options:

• throwing: 'Throwing' does not fit contextually as it implies a physical action rather than the distribution of information.
• mowing: 'Mowing' is unrelated to the context, as it refers to cutting grass or plants, which does not apply here.
• heading: 'Heading' suggests direction or movement towards something, which does not align with the act of disseminating information.

Correct answer: uncovered

Explanation: The word 'uncovered' fits grammatically as it indicates that the BBC has revealed or discovered the propaganda campaign, aligning well with the context of investigation and reporting.

Meaning: 'Uncovered' means to reveal or expose something that was hidden or not known before.

Wrong options:

• undercovered: 'Undercovered' is not a standard term and does not convey the intended meaning of revealing something.
• overestimated: 'Overestimated' implies an incorrect assessment of value or size, which does not relate to the act of revealing a campaign.
• consulted: 'Consulted' means to seek advice or information, which does not fit the context of revealing or discovering.

Correct answer: attract

Explanation: The word 'attract' is suitable as it indicates that the videos draw in viewers, fitting grammatically and contextually within the sentence.

Meaning: 'Attract' means to draw attention or interest towards something.

Wrong options:

• catch: 'Catch' implies a sudden action and does not convey the ongoing interest that 'attract' suggests.
• draw: While 'draw' could work, it is less commonly used in this context compared to 'attract,' which is more idiomatic for gaining viewers.
• cater: 'Cater' means to provide or supply, which does not fit the context of gaining views.

Correct answer: apparent

Explanation: The word 'apparent' fits grammatically as it describes the aim of the propaganda campaign as clear or obvious, aligning well with the context of the sentence.

Meaning: 'Apparent' means clearly visible or understood; it indicates that the aim is easily recognized.

Wrong options:

• truthful: 'Truthful' implies honesty, which does not fit the context of a deceptive aim.
• viewable: 'Viewable' refers to something that can be seen, which does not convey the intended meaning of clarity regarding the aim.
• likely: 'Likely' suggests probability, which does not match the definitive nature of 'apparent' in describing the aim.