Meaning: 'Across' means 'from one side to the other side of something,' suggesting that the studies span multiple nations.

Wrong options:

• over: The word 'over' typically indicates a position above something, which does not fit the context of studies conducted in multiple nations.
• provided: 'Provided' is a verb that implies giving or supplying, which does not grammatically fit as a preposition in this context.
• prompt: 'Prompt' is an adjective or verb that means to cause or encourage, which does not align with the intended meaning of indicating a geographical scope.

Correct answer: consistently

Explanation: The adverb 'consistently' indicates that the studies show results in a reliable and uniform manner, which is appropriate in this context as it describes the nature of the findings.

Meaning: 'Consistently' means 'in a way that does not change,' emphasizing the reliability of the study results.

Wrong options:

• intermitently: The word 'intermitently' means occurring at irregular intervals, which contradicts the idea of reliable findings.
• practively: 'Practively' suggests something is almost or nearly the case, which does not fit the context of the studies' results being reliable.
• rarely: 'Rarely' indicates infrequency, which is the opposite of what is intended in describing the studies' findings.

Correct answer: peers

Explanation: The term 'peers' refers to individuals of similar age or status, which fits contextually as it describes a comparison group in the study regarding social ties.

Meaning: 'Peers' means people who are equal in some way, particularly in age or social standing, which is relevant in the context of social relationships.

Wrong options:

• enimies: The word 'enimies' (likely a misspelling of 'enemies') refers to adversaries, which does not fit the context of social relationships.
• jeers: 'Jeers' refers to mocking remarks, which is unrelated to the concept of social ties and relationships.
• consorts: 'Consorts' implies companions or partners, but it does not specifically convey the idea of individuals in a similar social context as 'peers' does.

Correct answer: compelling

Explanation: The adjective 'compelling' suggests that the evidence is convincing and draws attention, which is appropriate in the context of discussing significant findings in research.

Meaning: 'Compelling' means evoking interest, attention, or admiration in a powerfully irresistible way, indicating the strength of the evidence.

Wrong options:

• staggering: The word 'staggering' implies something that is shocking or astonishing, which does not accurately describe the nature of the evidence in a scientific context.
• straining: 'Straining' suggests difficulty or effort, which does not fit the context of presenting evidence in a straightforward manner.
• regarding: 'Regarding' is a preposition that introduces a topic, which does not fit grammatically as an adjective to describe the evidence.