A.I. Explanation:

Correct answer: complexes

Explanation: The term 'complexes' fits grammatically as a plural noun that refers to interconnected systems, aligning with the context of social media platforms. It also matches the overall sentiment of the sentence, which discusses the role of social media in journalism.

Meaning: 'Complexes' refers to groups of interconnected things, in this case, social media networks that serve as platforms for sharing information.

Wrong options:

• networks: 'Networks' could fit but is less specific than 'complexes' in this context, which emphasizes the intricate nature of social media.
• frames: 'Frames' typically refer to structures or borders and do not convey the idea of interconnected systems relevant to social media.
• structures: 'Structures' implies a physical arrangement rather than the dynamic and interactive nature of social media platforms.

Correct answer: bases

Explanation: The word 'bases' is appropriate here as it indicates foundational sources of information, which aligns with the context of journalists relying on social media for images.

Meaning: 'Bases' refers to the underlying sources or foundations upon which something is built, in this case, the images used by journalists.

Wrong options:

• sources: 'Sources' could work but is more general; 'bases' emphasizes the foundational aspect of these images in journalism.
• roots: 'Roots' suggests origins rather than the functional role of social media in providing images for news.
• springs: 'Springs' implies a source of water or energy, which does not fit the context of information gathering in journalism.

Correct answer: posted

Explanation: The word 'posted' is the correct choice as it refers to the act of sharing content on social media, fitting grammatically and contextually within the sentence discussing user-generated content.

Meaning: 'Posted' means to share or publish content online, particularly on social media platforms.

Wrong options:

• deposited: 'Deposited' implies placing something down, which does not convey the active sharing aspect of social media.
• planted: 'Planted' suggests a deliberate placement, often with negative connotations, which does not fit the context of sharing images.
• imposed: 'Imposed' indicates forcing something upon others, which is not relevant to the voluntary act of sharing content on social media.

Correct answer: indicating

Explanation: The word 'indicating' is suitable as it suggests that research is showing or pointing out a trend, which aligns with the context of the sentence discussing findings about people's behavior.

Meaning: 'Indicating' means to show or point out something, in this case, the tendency of people to film or photograph news events.

Wrong options:

• displaying: 'Displaying' implies showing something visually, which does not capture the essence of research findings as effectively as 'indicating.'
• presenting: 'Presenting' suggests formally showing information, which is not as direct as 'indicating' in this context.
• expressing: 'Expressing' refers to conveying thoughts or feelings, which does not fit the context of research findings.

Correct answer: play

Explanation: The verb 'play' is appropriate here as it indicates a role or function, fitting grammatically and contextually with the sentence discussing the future of media.

Meaning: 'Play' means to have a role or function in something, in this case, the involvement of user-generated content in media.

Wrong options:

• serve: 'Serve' implies providing a service, which is less dynamic than 'play' in indicating an active role.
• apply: 'Apply' suggests putting something into practice, which does not fit the context of discussing roles in media.
• face: 'Face' does not fit grammatically or contextually, as it implies confronting something rather than having a role.

Correct answer: taken

Explanation: The word 'taken' is the correct choice as it indicates actions that need to be undertaken, fitting well within the context of ensuring ethical practices in media.

Meaning: 'Taken' means to carry out or execute actions, in this case, steps that must be implemented to maintain ethical standards.

Wrong options:

• climbed: 'Climbed' refers to ascending, which does not relate to the context of taking actions or steps.
• made: 'Made' is too vague and does not convey the specific action of implementing steps as effectively as 'taken.'
• walked: 'Walked' implies moving on foot, which does not fit the context of taking necessary actions in media ethics.