Meaning: 'Made' in this context means to have conducted or carried out the study.

Wrong options:

• surveyed: 'Surveyed' implies the act of collecting data but does not fit the grammatical structure as it would require a different construction (e.g., 'was surveyed').
• had: 'Had' does not convey the action of conducting a study and is grammatically incorrect in this context.
• asked: 'Asked' suggests a request for information, which does not accurately describe the action of conducting a study.

Correct answer: each other

Explanation: The phrase 'each other' is used to indicate mutual interaction between people, which fits perfectly in the context of analyzing online interactions. It is grammatically correct and contextually relevant.

Meaning: 'Each other' refers to the reciprocal relationship between individuals, indicating how they interact mutually.

Wrong options:

• together: 'Together' suggests a collective action but does not imply the reciprocal nature of interaction as 'each other' does.
• all: 'All' is too broad and does not specify the mutual interaction between individuals, making it contextually inappropriate.
• another: 'Another' implies an additional item or person, which does not fit the context of mutual interaction.

Correct answer: patterns

Explanation: The word 'patterns' fits grammatically as a plural noun that refers to recurring themes or trends in communication, aligning well with the context of research findings.

Meaning: 'Patterns' refers to recognizable trends or regularities in communication behaviors.

Wrong options:

• advantages: 'Advantages' implies benefits, which does not fit the context of analyzing communication types or trends.
• standards: 'Standards' refers to established norms, which does not align with the focus on communication trends.
• fellowships: 'Fellowships' refers to associations or groups, which is unrelated to the analysis of communication.

Correct answer: of

Explanation: The preposition 'of' is used to indicate the relationship between social networks and their influence, making it grammatically and contextually appropriate in this sentence.

Meaning: 'Of' indicates belonging or association, showing how social networks influence relationships.

Wrong options:

• with: 'With' suggests a partnership or accompaniment, which does not accurately convey the influence aspect in this context.
• without: 'Without' implies absence, which contradicts the intended meaning of influence from social networks.
• again: 'Again' indicates repetition, which does not fit the context of discussing influence.