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.